Untitled - FHP Manufacturing

2 EC Series 

Table of Contents 

MODEL NOMENCLATURE...............................................3 

FHP MANUFACTURING....................................................3 

ADVANTAGES OF FHP’s TECHNOLOGY.......................3 

EC SERIES MODEL 007 – 070.........................................3 

FEATURES........................................................................3 

Cabinet .......................................................................3 

Quiet Operation ..........................................................4 

Serviceability ..............................................................4 

Unit Configurations......................................................4 

Filter Racks.................................................................4 

Hanging Brackets........................................................4 

Blower & Motor............................................................5 

Water Connections......................................................6 

Refrigerant Circuit.......................................................6 

Unit Protection Module................................................7 

UPM Features.............................................................7 

UNIT OPTIONS .................................................................8 

Hot Gas Reheat..........................................................8 

Refrigerant Flow Path.................................................8 

Hot Gas Reheat Sequence of Operation - 

On/Off Control.............................................................9 

Hot Gas Reheat Control Options................................9 

Special Considerations...............................................9 

Low Temperature Well Water......................................9 

Indoor Pool Dehumidifying During Winter Months .....9 

Sequence of Operation - Modulating Hot Gas Reheat 

(MHGRH)..................................................................10 

Hot Gas Bypass........................................................10 

Psychometric Chart...................................................10 

Fluid Differential Pressure Switch.............................11 

DDC Controls:...........................................................11 

SYSTEMS........................................................................12 

Water Source Cooling Tower/Boiler Systems............12 

Geothermal Systems.................................................12 

Earth Coupling Options.............................................12 

Vertical Ground Loop System...................................13 

Horizontal Ground Loop System...............................13 

Surface Water, Lake or Pond System.......................13 

TYPICAL HEAT PUMP OPERATING MODES................14 

Cooling Mode............................................................14 

Heating Mode............................................................14 

TYPICAL UNIT INSTALLATION......................................15 

Unit Location.............................................................15 

Vertical Unit Installation.............................................15 

Horizontal Unit Installation .......................................15 

Ductwork and Sound Attenuation Considerations.....16 

Piping........................................................................17 

Condensate Drain Piping..........................................17 

UNIT CONTROLS............................................................17 

Thermostats..............................................................17 

HOSE KITS......................................................................17 

Operating Limits – Cooling & Heating.......................18 

CERTIFIED PERFORMANCE DATA...............................19 

EC007 (300 CFM).....................................................21 

EC009 (350 CFM).....................................................22 

EC012 (400 CFM).....................................................23 

EC015 (500 CFM).....................................................24 

EC018 (650 CFM).....................................................25 

EC024 (850 CFM).....................................................26 

EC030 (950 CFM).....................................................27 

EC036 (1200 CFM)...................................................28 

EC041 (1150 CFM)...................................................29 

EC042 (1500 CFM)...................................................30 

EC048 (1600 CFM)...................................................31 

EC060 (2000 CFM)...................................................32 

EC070 (2200 CFM)...................................................33 

ELECTRICAL DATA........................................................34 

BLOWER PERFORMANCE CFM....................................35 

PHYSICAL DATA.............................................................36 

VERTICAL UNIT DIMENSIONS......................................37 

Vertical Top Discharge Water Source Heat Pump.....37 

Vertical Counterflow Water Source Heat Pump........38 

HORIZONTAL UNIT DIMENSIONS.................................39 

Horizontal Water Source Heat Pump........................39 

TYPICAL WIRING DIAGRAMS.......................................40 

1/2 through 6 ton | Single stage unit | 208-230V/1ph 

with PSC direct drive motor .....................................40 

1 through 6 tons | Single stage unit | 208-230V/1ph 

with PSC direct drive motor – Hot Gas Reheat.........41 

1/2 through 6 tons | Single stage unit | 208/230V/1ph 

with PSC direct drive motor – Economizer................42 

3 through 6 tons | Single stage unit | 208/230V/1ph 

with PSC direct drive motor – Hot Gas Reheat & 

Economizer...............................................................43 


with PSC direct drive motor.......................................44 

2 through 6 tons | Single stage unit | 208-230V/3ph 

with PSC direct drive motor – Hot Gas Reheat.........45 


with PSC direct drive motor – Economizer................46 


with PSC direct drive motor – Hot Gas Reheat & 

Economizer...............................................................47 

SPECIFICATION GUIDE.............................................48-51 

6720220353 

Subject to change without prior notice Revised 10-12

Model Nomenclature 

MODEL NOMENCLATURE 

EC Series 3 

EC 036- 1 VT C -F L T 

SERIES: 

EC 

NOMINAL CAPACITY: 

SUPPLY AIR LOCATION: 

T - TOP 

VOLTAGE DESIGNATION: 

F - FRONT 

0 - 115/1/60 R - REAR 

1 - 208/1/60 & 230/1/60 S - STRAIGHT THRU 

2 - 277/1/60 E - END BL0W 

3 - 208/3/60 & 230/3/60 B - BOTTOM 

4 - 460/3/60 

5 - 575/3/60 RETURN AIR LOCATION: 

L - LEFT 

CABINET CONFIGURATION: 

R - RIGHT 

VT - VERTICAL 

B - BACK 

HZ - HORIZONTAL 

F - FRONT 

CF - COUNTERFLOW 

WATER CONNECTIONS 

HEAT EXCHANGER MATERIAL: 

LOCATION: 

C - COPPER F - FRONT 

N - CUPRO-NICKEL 

FHP MANUFACTURING 

Specializing in efficient green technology for 

commercial heating and cooling products, FHP is 

one of the leading manufacturers of Geothermal 

and Water Source heat pumps, which assures that 

you are buying a unit you can trust. We are part of 

Bosch Thermotechnology Ltd., a Robert Bosch 

Group unit dedicated to providing highly efficient 

heating and cooling solutions to the private and 

public sector. 

FHP headquarters has a state of the art facility with 

the latest manufacturing technology available. Each 

unit is factory tested according to Bosch quality 

standards in order to ensure our customers the 

highest level of satisfaction and comfort. We 

carefully select our suppliers in order to equip our 

products with the best components available. 

ADVANTAGES OF FHP’s TECHNOLOGY 

• Low installation costs 

• Lower operating costs 

• Flexibility and comfort 

• Energy efficiency 

• Space savings 

• Superior quality 

• Quiet operation 

EC SERIES MODEL 007 – 070 

• 13 Models from ½ through 6 tons 

• Horizontal, Vertical and Counterflow Configurations 

FEATURES 

Cabinet 

FHP EC unit cabinetry is constructed using 

Galvalume + sheet metal with a clear acrylic 

coating. This steel provides superior corrosion 

protection for units located indoors. 

All interior surfaces are lined with ½" thick, 1.5 lb./cu.ft. 

density, Micromat insulation for thermal insulation and 

acoustical attenuation. This insulation is noncombustible, 

non-hydroscopic and does not support 

fungal growth. Insulation meets NFPA 90A and 90B for 

fire protection and is certified to meet the GREENGUARD 

Indoor Air Quality Standard for Low Emitting Products. 

Protection against corrosion is a feature in the EC series. 

A stainless steel drain pan will last the lifetime of the unit 

and resist corrosion and cracking that may occur with 

steel or plastic materials. 

Revised 10-12 

Subject to change without prior notice 

6720220353

4 

EC Series 

Quiet Operation 

Air side coils have aluminum side plates to prevent 

corrosion. 

Taking all into consideration the life expectancy of 

the EC series is anticipated to be well in excess of 

the industry standard of 19 years. 

Quiet Operation 

All panels are insulated with ½" thick, 1.5 lb./cu.ft. 

density fiberglass insulation for both thermal 

insulation and noise reduction. 

Noise reduction is a critical consideration of the unit 

design. Even under normal operating conditions, 

vibration may be transmitted to the building 

structure and introduced into the space as noise. All 

EC units have a unique floating base pan where the 

compressor is mounted on a heavy steel plate that 

rests on a high density rubber pad in the base of the 

unit. In addition, compressors are mounted on 

rubber grommets. This double isolation, unique to 

FHP, is standard in all EC series units preventing 

vibration and noise transmission from the 

compressor to the unit structure resulting in 

exceptionally quiet operation. 

Insulated bulkheads in all units, separate the 

compressor section from the blower section, 

allowing the unit to be serviced during operation. 

Large removable panels aid in servicing the unit, 

when necessary. Separate electrical knockouts in 

the unit corner post allow for easy and safe 

routing of high and low voltage lines to the inside 

of the cabinet. 

Unit Configurations 

All units are available in horizontal and vertical and 

counterflow configurations. Additionally, several 

options of return air and supply air are offered as 

standard, providing configuration flexibility. 

Filter Racks 

Units come standard with a 1" filter rack and 

construction filter. A 2" four-sided filter rack and 

pleated filter is optional and greatly reduces 

unfiltered air from entering the unit. Filter doors 

allow for easy routine maintenance and changing 

of the air filter. A 1" return duct collar is integral to 

the filter rack eliminating the need for field mounted 

duct collars. Units are shipped with a 1" filter; 

2" pleated filters are available as an option. 

For additional sound attenuation, a compressor 

blanket is available as an option on unit sizes 018 

and above. 

Serviceability 

Optional 2" Filter 

Hanging Brackets 

Optional 2" Filter Rack 

All horizontal units come standard with hanging 

bracket kits for suspending the unit from field 

supplied hanger rods. These kits include heavy duty 

steel brackets and rubber grommets for sound and 

vibration isolation from the building structure. 

All units are designed to be serviced from the front of 

the unit. Schrader valves for high and low pressure 

gauges and the electrical box components are easily 

accessible for diagnosing and servicing the unit. 

6720220353 


Unit Configurations 

EC Series 5 

Access 

Panel 

Condenser Water Out 

Access 

Panel 

Access 

Panel 

Condensate Drain 

Condenser Water In 

Electrical Knock-Outs 

Condenser Water Out 

Access 

Panel 


Condenser Water In 

Left Hand Return Top Discharge FLT 

Electrical Knock-Outs 

Right Hand Return Top Discharge FRT 

Condenser 

Water Out 

Condenser 

Water In 

Electrical 

Knock-Outs 

Left Hand Return Bottom Discharge FLB 


Right Hand Return Bottom Discharge FRB 

Front 

Return Air Left 

Return Air Right 

Front 

Straight Through FLS 

End Blow FLE 

End Blow FRE 

Straight Through FRS 

Typical Horizontal Unit Configurations 

Blower & Motor 

Large blower wheels allow the unit to operate at 

lower speeds for quieter operation. 

PSC blower motors are standard on all unit sizes . 

A 1" supply air duct-flange connection is standard, 

facilitating duct installation on the unit. Horizontal 

units are field convertible from straight through to 

an end discharge arrangement. 

1" Duct-Flange 

Revised 10-12 


6720220353

6 

EC Series 

Water Connections 

Water Connections 

All water connections are heavy duty bronze FPT 

fittings securely fastened to the unit corner post. 

This allows connecting to a flexible hose kit without 

the use of a backup wrench making for easier, faster 

installation. 

Refrigerant Circuit 

EC series units are designed using the optimum 

combination of compressor, water and air coils to 

provide peak performance. 

Heavy duty heat pump compressors are used in all 

units. Rotary, reciprocating and scroll compressors 

offer optimum performance for each unit size. 

In geothermal applications where fluid temperatures 

can drop below the dew point of the surrounding air, 

optional insulation is available to prevent water coils 

and refrigerant piping from sweating. 

Air coils are state of the art, employing lanced fin 

and rifled tubing for maximum heat transfer. Large 

face areas result in lower face velocity reducing 

sound while ensuring high latent heat removal for 

maximum dehumidification in the cooling mode. 

A pilot operated four-way reversing valve in the 

refrigeration circuit allows the unit to operate in 

either the heating or cooling mode. All FHP units 

have the reversing valve energized in cooling 

mode, which allows the unit to fail to heating 

mode for building protection. This will ensure you 

are not left without heat in the middle of winter. 

should the reversing valve coil fail. 

Refrigerant to water heat exchangers are coaxial 

tube-in-tube type providing a robust construction, 

ensuring years of trouble free operation. Coaxial 

coils are selected and designed for peak 

performance, offering the best combination of low 

water pressure drop and maximum heat transfer in 

both the cooling and heating modes. Standard 

coaxial coils have a copper interior water tube and 

a steel outer shell. Optional Cupro-Nickel coils are 

available for applications where the water is of 

lower quality. 

Refrigerant flow to the air coil is controlled by 

capillary tubes as standard in EC units through 5 

tons. Thermal Expansion Valves come standard on 

the optional Extended Range EC and are designed 

to vary the flow of refrigerant depending on the 

load. TXV’s provide unit optimization and a more 

stable control over a wider range of operating 

conditions. 

EC Series units are rated to withstand 600 PSIG 

working refrigerant pressure and 400 PSIG 

working water pressure. 

All EC units, two tons and above, are provided with 

filter driers to ensure that no residual water or 

other foreign material is present to contaminate 

the refrigerant system and lead to premature 

failure. 

6720220353 


Unit Protection Module 

High and low pressure switches are factory installed 

in the refrigerant circuit, protecting the unit against 

high pressure conditions or loss of refrigerant charge. 

Schrader service valves are standard on the high and 

low pressure lines of all units, allowing connection to 

gauges for service diagnostics and to either evacuate, 

reclaim or recharge refrigerant into the system. 

Unit Protection Module 

Each EC unit is factory provided with a Unit Protection 

Module (UPM) that controls the unit operation 

and monitors the safety controls that protect the 

unit. The UPM interfaces with the thermostat or 

direct digital controller. The main purpose of the 

UPM is to protect the compressors by monitoring 

the different states of switches and sensors. This 

module provides time delays and protects the unit 

against freezing of the water to refrigerant heat 

exchangers as well as condensate overflow when 

the appropriate sensors are installed. 

Safety controls include the following: 

• High pressure switch located in the refrigerant 

discharge line. 

• Low pressure switch located in the unit refrigerant 

suction line. 

• Optional low fluid temperature (freeze) protection 

sensor. The freeze protection sensor, located 

on the refrigerant liquid line entering the coaxial 

heat exchanger is designed to disable compressor 

operation when the unit is in the heating 

mode, should the refrigerant temperature fall 

below either 30°F or 15°F. (The default setting is 

30 degrees farenheit, however this can be 

changed to 15 degrees farenheit by cutting the 

R42 resistor located above the Dip Switch SW1). 

If the temperature drops below or remains at the 

freeze limit trip for 30 seconds, the controller will 

shut the compressor down and enter into a soft 

EC Series 7 

lockout condition. The status LED will display the 

fault code, but the alarm contact will be inactive. 

• Optional Condensate overflow protection sensor 

factory mounted in the drain pan of the unit. Standard 

on all horizontal units. 

UPM Features 

• ANTI-SHORT CYCLE TIMER—5 minute delay on 

break timer to prevent compressor short cycling. 

• RANDOM START—Each controller has a unique 

random start delay ranging from 270 to 300 

seconds after power is applied to the board. This 

will prevent the simultaneous start of multiple 

units after a power outage. 

• LOW PRESSURE BYPASS TIMER—The low 

pressure switch is bypassed for 120 seconds 

after it opens to prevent nuisance low pressure 

lockouts during cold start-up in the heating mode. 

• BROWNOUT/SURGE/POWER INTERRUPTION 

PROTECTION—Prevents compressor operation 

should the voltage drop below 10% of unit rated 

value. The unit will restart once the voltage is within 

tolerance and the random start has timed out. 

• MALFUNCTION (ALARM) OUTPUT—The controller 

has a set of contacts for remote fault indication. 

This can be either a steady output or can be 

set to pulse with the fault code. Two connections 

are available one to provide a 24 volt output, the 

other to provide a dry contact. 

• TEST SERVICE MODE—A dip switch setting is provided 

to reduce all time delay settings to 10 

seconds maximum during troubleshooting for 

verification of unit operation. 

• L.E.D. FAULT INDICATION—Two L.E.D. indicators 

are provided as follows: 

• GREEN: Power L.E.D. indicates 18 – 30 VAC 

present at the board. 

• RED: Fault indicator with blink codes 

identifying the particular fault. 

1 Blink - High Pressure 

2 Blinks - Low Pressure 

3 Blinks - Low Fluid Temperature (Freeze Protection) 

4 Blinks - Condensate Overflow 

5 Blinks - Brownout condition 

Revised 10-12 


6720220353

8 

EC Series 

Unit Options 

• INTELLIGENT RESET—If a fault condition is 

initiated, the 5 minute delay on break time period 

is initiated and the unit will restart after this delay 

expires. The UPM is configurable for either 2 or 4 

fault occurrences before going into a hard lockout. 

The selection is made through a dip switch 

setting on the board. If the fault condition still 

exists or reoccurs twice or four times within one 

hour, the unit will go into a hard lockout and 

requires a manual lockout reset. A condensate 

overflow fault will, however, put the unit into a 

hard lockout immediately. 

• LOCKOUT RESET—A hard lockout can be reset by 

turning the unit thermostat off and then back on 

or by shutting off unit power at the circuit breaker. 

The method of reset is selectable by the dip 

switch on the board. 

UNIT OPTIONS 

Hot Gas Reheat 

Hot gas reheat (HGR) allows the user to not only 

control space temperature, but also humidity levels 

within the conditioned space. Excessive moisture in 

the space can promote mold growth leading to 

damage in the structure or interior surfaces, as well 

as reducing the air quality and creating an unhealthy 

environment. 

Possible causes of excess humidity could be by the 

unit having to operate under a widely varying load, 

an oversized short cycling unit, a high percentage of 

unconditioned outside air being introduced into the 

space, a high latent load in the space or any location 

where humidity infiltration is a problem. 

Typical unit control is by a wall mounted thermostat 

that senses temperature in the occupied space. By 

utilizing a humidistat in addition to the thermostat, 

we are able to monitor the humidity levels in the 

space as well. The HGR option allows cooling and 

dehumidification to satisfy both the thermostat and 

humidistat while preventing over cooling of the 

space while in the dehumidification mode. 

Once the thermostat reaches set point temperature 

and the humidity is above set point, the unit controller 

will energize the reheat valve operating the 

unit in hot gas reheat mode, first cooling and 

dehumidify, then reheating the air using hot refrigerant 

gas before delivering it to the space, usually 

2° to 5°F below room temperature. The unit is 

operating as a dehumidifier. By reheating the air 

along a constant sensible heat line, the relative 

humidity of the leaving air is reduced. This option 

offers significant energy savings over the traditional 

means of reheating air with electric heating coils. 

The moisture removal capacity of a specific heat 

pump is determined by the unit latent capacity 

rating. A heat pump’s latent capacity can be determined 

by reviewing the heat pump specification 

data sheets. Depending upon the entering water 

and air conditions, a total and sensible capacity can 

be interpolated from the data sheets. Subtracting 

sensible capacity from total capacity yields latent 

capacity. Dividing the latent capacity by 1069 (BTU/ 

LB of water vapor at 80° DB and 67° WB) yields the 

amount of moisture removal in pounds per hour. 

Refrigerant Flow Path 

Check Valve 

Sub-Assembly 

Figure 1 

Reheat Coil 

Air 

Flow 

Oil 

Return 

Bleed 

Line 

Evaporator 

Coil 

Bypass Regulator 

Hot Gas Line 

Distributor 

Air Flow 

Equalizer Line 

Expansion Valve 

Reversing 

Valve 

Hot Gas 

Reheat 

Equalizer Line 

Discharge Out 

Water 

Liquid 

Line 

Condenser 

Coil 

TXV 

Sensing 

Bulb 

Compressor Suction In 

A hot gas reheat valve and a reheat coil are included 

in the refrigerant circuit. The refrigerant circuit in 

the cooling and heating mode is identical to a 

standard heat pump. 

In the reheat mode, the compressor discharge gas 

is diverted through the reheat valve to the reheat 

coil which is located downstream of the cooling 

coil. The superheated refrigerant gas reheats the air 

leaving the cooling coil. The hot refrigerant gas then 

passes though the water to refrigerant coil where it 

6720220353 


Sequence of Operation 

EC Series 9 

is condensed to a liquid. From this point the rest of 

the cooling cycle is completed as in a regular heat 

pump. There are two check valves to prevent 

refrigerant flow into the reheat coil during standard 

cooling/heating cycles. A small copper bleeder line 

is connected to the outlet line of the reheat coil and 

between the expansion valve outlet and distributor 

to the air coil. This line is necessary to let any 

liquid/oil that may have migrated to the reheat coil 

during reheat to escape during standard cooling/ 

heating modes. (See Figure 1) 

Hot Gas Reheat Sequence of Operation 

-On/Off Control 

The sequence of operation in the cooling and 

heating mode is the same as a regular heat pump. 

In the reheat mode, on a call from the humidistat, 

the reheat relay coil is energized through the “H” 

circuit. The cooling relay remains de-energized 

enabling the reheat solenoid. The blower relay, 

reversing valve and compressor contactor are 

energized through contacts on the reheat relay. See 

typical wiring diagram page 41. (Note: The reheat 

mode always operates in the cooling mode.) Should 

the temperature in the space increase above set 

point, the compressor terminal Y is energized, 

which will de-energize the reheat valve putting the 

unit into straight cooling mode. A call for cooling or 

heating will always take precedence over hot gas 

reheat. 

Hot Gas Reheat Control Options 

There are several ways to control heat pumps with 

hot gas reheat. You should choose the means that 

best suits your specific application. Please refer to 

the Hot Gas Reheat wiring diagrams for typical 

thermostat wiring. Most heat pump compatible 

thermostats in conjunction with a humidistat are 

acceptable for use, (Note: “O” output for reversing 

valve energized in cooling mode is required.) 

Combination thermostat/humidistat are also 

available. 

Special Considerations 

Some applications require special attention to 

maximize the performance of the hot gas reheat 

function: 

• Low Temperature Well Water 

• Indoor Pool Dehumidifying During Winter Months 

(Re: Heating Mode) 

Consult the factory for special application 

considerations. 

Low Temperature Well Water 

When low temperature well water is utilized as the 

water source (below 55°F), a means of establishing 

two flow rates, one for the cooling/reheat mode 

and one for heating mode is recommended. In the 

cooling mode at low entering water temperatures 

and standard flow rates, discharge pressures and 

corresponding discharge gas temperatures are 

relatively low. At these conditions, when the reheat 

mode is initiated, the low temperature discharge 

gas can reduce reheat capacity. A means to reduce 

the water flow rate and elevate the discharge 

pressure/ temperature in cooling/reheat mode 

should be provided. Conversely, at low entering 

water temperatures in the heating mode, system 

suction pressure is reduced causing a loss in 

heating capacity. A means of providing higher flow 

in the heating mode should be provided. The 

simplest way to accomplish the above is to install 

water regulating valves. 

Indoor Pool Dehumidifying During Winter 

Months 

It is important to remember that when in the 

reheat/dehumidification mode the heat pump is 

cooling and reheating. A secondary means of 

heating the space during the dehumidification 

mode should be provided. The indoor space temperature 

should be kept at least two (2) degrees F 

above the pool water temperature. If this is not 

done the warm pool water attempts to heat the 

space and the humidity levels increase exponentially. 

The heat pump is normally sized to handle the 

design latent load moisture removal. A second heat 

pump or resistance heat should be provided to 

handle the structures shell loss load. 

Protective coatings are highly recommended for 

all pool applications, due to the highly corrosive 

chemical environment. 

Revised 10-12 


6720220353

10 

EC Series 

Hot Gas Bypass 

Sequence of Operation - Modulating Hot 

Gas Reheat (MHGRH) 

Modulating Hot Gas Reheat differs from On/Off in 

that the reheat function is always active. The 

purpose of MHGRH is to deliver air at or close to 

neutral conditions. 

Air is cooled and dehumidified by the cooling coil to 

around 55°F DB/54°F WB. A sensor located in the 

supply air stream is set at the required leaving dry 

bulb temperature and will send a signal to the 

modulating hot gas reheat valve to direct the flow of 

hot gas to maintain that temperature. See psychometric 

chart diagram( Figure 2). A typical application 

for this would be in treating 100% outside air. 

This air would be ducted directly into the space 

relieving the unit handling the zone of any outside 

air load. This can result in a smaller zone unit, less 

air flow and a savings in both initial and operating 

cost. 

Control of the hot gas modulation is by the thermostat 

in the supply air duct or through a building 

management system. A separate controller is used 

to control the unit itself. 

Hot Gas Bypass 

The function of the hot gas bypass valve is to 

prevent icing of the air coil when the unit is operating 

at low load conditions. This situation could arise 

if the space experiences widely different loads, for 

example a conference center. Without a hot gas 

bypass circuit the evaporating temperature will fall 

and ice could form on the coil restricting air flow 

and aggravating the situation. Eventually the coil 

could be totally blocked resulting in possible 

refrigerant liquid entering the compressor and 

failure of the system. 

The hot gas bypass valve located in the compressor 

discharge line diverts hot gas to the inlet of the air 

coil. The valve is factory set to open when the 

evaporating pressure falls to 75 PSI and will modulate 

to prevent the pressure falling any lower. This 

setting is field adjustable and this set point may be 

adjusted as required. 

Psychometric Chart 

Figure 2 

85 

85 

85 WET BULB TEMPERATURE - °F 

80 

80 

75 

80 

75 

65 

70 

70 

75 

Entering 

70 

65 

DEW POINT TEMPERATURE - °F 

60 

90% 

65 

60 

50 

55 

Lvg. Coil 

80% 

70% 

55 

60% 

60 

Reheat 

25% 

55 

50 

40 

35 

45 

40 

45 

50 

50% 

40% 

30% 

20% 

10% RELATIVE HUMIDITY 

15% 

8% RELATIVE HUMIDITY 

6% 

4% 

2% 

45 

40 

35 

30 

25 

20 

10 

0 

35 40 45 50 55 60 65 70 75 80 85 90 95 100 

Chart by: HANDS DOWN SOFTWARE, www.handsdownsoftware.com 

DRY BULB TEMPERATURE - °F 

6720220353 


DDC Controls 

EC Series 11 

Fluid Differential Pressure Switch 

The function of the differential pressure switch is to 

prevent or stop compressor operation should the 

water supply fail. This will prevent the unit from 

locking out on a safety requiring a manual reset to 

restart. 

The switch is piped between the water entering and 

leaving connections. Should the pressure drop fall 

below set value, the switch will open de-energizing 

the DPS relay, thereby stopping the compressor. 

The blower operation will not be affected by this 

option. 

DDC Controls: 

The FHP factory mounted DDC Controller is preprogrammed 

and installed in the unit with the Unit 

Protection Module (UPM) to be job site ready. The 

unit will operate in a 100% stand-alone control 

mode or connect to a Building Automation System 

(BAS) using open protocols BACnet, Modbus, N2 or 

LonWorks. Stand-alone DDC modules must use 

remote intelligent sensors and are to be programmed 

by the FHP bacview controller only. 

Zone temperatures, leaving air temperatures and 

water temperatures can be monitored from the 

central control computer and unit fault indication 

displayed. 

Available inputs/outputs include: 

• Discharge air temperature 

• Leaving water temperature 

• Fan run time 

• Override time remaining 

• Night setback status 

• Percent of units cooling 

• Percent of units heating 

• Cooling set points 

• Heating set points 

• Status of all the alarms 

• Space temperature 

• Occupied heating and cooling set points 

• Continuous or cycle fan during occupied mode 

• Command for occupied or unoccupied mode 

• Command for override of the unoccupied mode 

(unit resorts to occupied set points) 

• Set point adjustment 

To complement the controller, FHP offers a line of 

intelligent space sensors, which provide precision 

measurement and communication capabilities in an 

attractive low profile enclosure. A hidden communications 

jack provides access to the HVAC control 

system for commissioning and maintenance. 

Models available include: 

• The RS Standard which has no local temperature 

set point adjustment. 

• The RS Plus offers a local set point adjustment 

and override to an occupied mode and LED 

indication of current status. 

• The RS Pro has a large LCD display and easy-touse 

occupant controls for set point adjustment. 

A backview hand held diagnostic tool is available to 

allow local access to display and modify user 

defined properties without any computer software. 

RS Standard RS Plus RS Pro 

Revised 10-12 


6720220353

12 

EC Series 

Systems 

SYSTEMS 

EC series may be used in a variety of different 

applications depending on the system design. An 

overview of Tower/Boiler and Geothermal systems 

is given below. There could be several variations 

and combinations of these systems. 

Water Source Cooling Tower/Boiler Systems 

Water source cooling tower/boiler systems have 

been used for many years and are recognized as 

having a low installation cost and providing more 

energy efficient operation that most other systems 

on the market. 

In a typical building each office or space would 

receive its own heat pump. This ensures that the 

unit will independently satisfy the heating or 

cooling requirements for that space irrespective of 

the requirements of any other space. Unlike some 

other systems, this offers individual control and 

enhanced comfort in that area. 

All the units are connected to a common water loop 

containing, in addition to the heat pumps, a cooling 

tower, boiler, a primary and standby pump and a 

loop water temperature controller. In the summer 

cooling mode, the units are cooling and rejecting 

heat to the water loop. This heat is then rejected to 

the atmosphere through a cooling tower. In winter, 

heat is taken from the loop and, together with the 

compressor’s heat of compression, used to heat 

the space. The heat removed from the loop is then 

replenished by the boiler. The loop water temperature 

controller will keep the fluid within certain 

temperature limits typically 70°F in winter and 85°F 

in summer by cycling either the cooling tower or 

boiler operation. 

In today’s modern buildings the interior core 

usually has a net cooling requirement year round 

irrespective of the outside temperature. This is due 

to the internal heat gains from people, office 

equipment and lighting. The heat from these units 

in cooling is rejected to the common water loop and 

is absorbed by those units on the buildings perimeter 

that are in the heating mode. In effect we are 

transferring energy around the building from where 

it is in excess to those areas where it is needed. In 

many instances we find a balanced system where 

the heat generated in the interior space is sufficient 

to heat the perimeter resulting in neither the 

cooling tower nor boiler operating. This concept, 

unique to a water source system, provides the most 

energy efficient system on the market. 

Geothermal Systems 

The earth has a tremendous capacity of storing 

thermal energy, which can be utilized to heat or 

cool a building. 

A Geothermal system offers all the benefits of a 

cooling tower and boiler system with the additional 

advantage of having overall greater energy efficiency. 

As the cost of energy increases geothermal 

installations are becoming the system of choice by 

developers and design engineers. 

There are several alternative methods of utilizing 

the energy contained in a geothermal system, giving 

the design engineer several options for selecting 

the one that is right for a particular application. 

Earth Coupling Options 

Ground Loop Systems (Closed Loop) 

Lengths of high density polyethylene piping are 

buried in the earth either in vertical bore holes or 

horizontal trenches depending on the space available. 

Fluid from the loop inside the building circulates 

through these pipes either rejecting heat to the 

ground when there is a net cooling requirement or 

absorbing heat from the ground when heating is the 

dominant requirement. 

The temperature of the earth below 6 feet is relatively 

constant and is not affected by the ambient 

temperature. For this reason, the ground temperature 

is cooler than the summer ambient and warm- 

6720220353 


Vertical Ground Loop System 

EC Series 13 

er than the winter ambient in most regions. Geothermal 

systems are able to operate effectively in 

extreme ambient conditions exceeding 100°F in 

summer and -30°F in winter. This is one of the 

reasons why geothermal systems have such an 

advantage over other systems. An additional advantage 

is that no fossil fuels are used reducing the 

carbon emission of the building. 

Even in areas which are cooling or heating dominate 

a hybrid system can be used with a downsized 

cooling tower or boiler. This system will reduce the 

installed cost significantly with only a modest 

impact on overall operating efficiency. 

Geothermal systems may cost more to install but 

the savings in energy and low maintenance costs 

more than off set this with payback times typically 

five years or even less. 

Vertical Ground Loop System 

Horizontal Ground Loop System 

This type is cost effective on smaller projects or 

where there is sufficient space for the loop field. 

Trenches, three to six feet deep are dug in which a 

series of high density polyethylene pipes are laid. 

These loops are manifolded and connected to the 

loop inside the building which feeds the heat 

pumps. The fluid is then circulated, absorbing or 

rejecting heat to the earth depending on the requirement 

for heating or cooling. 

Surface Water, Lake or Pond System 

This method is used mainly in commercial buildings 

or where space for a loop field is limited. Vertical 

holes 100 to 400 feet deep are drilled in the ground, 

and a single loop of high density polyethylene pipe 

with a U-tube at the bottom is installed. The bore 

hole is then sealed with grout to ensure good 

contact for heat transfer with the soil. The size of 

the project will determine how many bore holes are 

required. The vertical ground loops are then connected 

to a horizontal header pipe that carries fluid 

to the building and circulated to each heat pump. 

The Earth’s temperature is stable below the surface 

which is an advantage for this system and provides 

for the greater efficiency. Vertical ground loop fields 

may be located under buildings or parking lots. The 

life expectancy is in excess of 50 years. 

This type of design is economical when a project is 

located near a body of water. Fluid circulates 

through polyethylene piping in a closed system, just 

as it does through ground loops but in this case 

underwater. The pipes may be coiled in a slinky to 

fit more surfaces into a given amount of space. The 

lake needs to be a minimum size and depth depending 

on the building load. Lake loops have no adverse 

impact on the aquatic system. Specialized 

lake heat exchangers are also available for this 

application. New technology is emerging for stainless 

steel and titanium heat exchangers. 

Revised 10-12 


6720220353

14 

EC Series 

Well Water System 

Well Water System 

This type of installation is only possible if there is 

sufficient ground water available in a well. The 

water must be of good quality. Local codes may 

limit the use of this system in certain areas. The 

arrangement is referred to as an open system 

which means that water is pumped directly from 

the source into the geothermal unit and then 

discharged either into a return well or a body of 

water. The water quality is unaffected other than a 

change in the temperature. 

TYPICAL HEAT PUMP OPERATING 

MODES 

Cooling Mode 

In the cooling mode, the refrigerant, a hot gas, is 

pumped from the compressor to the water to 

refrigerant heat exchanger via the reversing valve. 

Water, generally with an anti freeze, flowing 

through the water-to-refrigerant heat exchanger 

transfers heat from the refrigerant to the fluid 

raising its temperature while condensing the hot 

gas into a liquid. This liquid refrigerant then flows 

through a metering device to the air-to-refrigerant 

heat exchanger coil. 

In evaporating into a gas, the liquid absorbs heat 

and cools and dehumidifies the air that passes over 

the coil surface. The cooling cycle is completed 

when the refrigerant flows as a low pressure gas 

through the reversing valve and back to the suction 

side of the compressor. 

Cool dehumidified air is circulated to the space 

maintaining comfort conditions. 

Heating Mode 

During the heating mode, the refrigerant, a hot gas, 

is pumped from the compressor to the air-to-refrigerant 

heat exchanger coil via the reversing valve. 

In the air-to-refrigerant heat exchanger coil, the 

heat is removed by the air that passes over the coil 

surface, and the hot gas condenses into a liquid. 

The heated air is ducted to the space and provides 

heating for the building. 

The refrigerant liquid then flows through a metering 

system to the water-to-refrigerant heat exchanger. 

Basic Refrigeration Cycle 

Water to Air Heat Pump Cycle— 

Cooling Mode 

Loop Fluid 

Loop Fluid 

Loop 

Loop 

Fluid 

Fluid 

Loop Fluid 

Loop Fluid 

Loop 

Loop 

Fluid 

Fluid 

Loop Fluid 

Cool Refrigerant Gas 


Air to 

Air to 

Refrigerant 

Refrigerant 

Heat 

Heat 

Cool 

Exchanger 

Refrigerant Cool 

Exchanger 

Refrigerant Gas 

Thermal 

Gas 

Expansion Thermal 

Expansion Valve 

Valve 

Warm Liquid Refrigerant 


Water Water to to 

Refrigerant 

Heat 

Exchanger 

Hot Refrigerant Gas Gas 

Cold Liquid Refrigerant 

Water to 

Refrigerant 

Heat 

Exchanger 



Water to Air Heat Pump Cycle— 

Heating Mode 

Cool 

Cool 

Refrigerant 

Refrigerant 

Gas 

Gas 

ReversingValve 


Hot 

Hot 

Refrigerant 

Refrigerant 

Gas Gas 

Compressor 

Compressor 

Hot Hot Refrigerant Gas Gas 

Hot Refrigerant Gas 

Air to 

Refrigerant 

Heat 

Hot 

Exchanger 

Refrigerant 

Gas 

Thermal 

Expansion 

Valve 



Cool 

Refrigerant Gas 


Hot 

Refrigerant 

Gas 

Hot Refrigerant Gas 

Compressor 

6720220353 


Typical Unit Installation 

Water, generally with an anti freeze, circulates 

through this heat exchanger and is cooled by the 

evaporating refrigerant which evaporates into a gas. 

The heating cycle is completed when the refrigerant 

flows as a low pressure gas through the reversing 

valve and back to the suction side of the compressor. 

TYPICAL UNIT INSTALLATION 

Unit Location 

Any mechanical device will, at some point in time 

require servicing and repair. 

With this in mind sufficient space must be provided 

around the unit for service personnel to perform 

maintenance or repair. 

Units are not designed for outdoor installation. Avoid 

locations where the unit may be exposed to freezing 

conditions or where the humidity levels could cause 

condensation on the unit panels for example when 

exposed to outdoor ambient conditions. 

Vertical Unit Installation 

EC Series 15 

Sufficient space must be provided for filter replacement 

and access to the compressor and blower for 

service. 

Units should be set on a piece of rubber, neoprene 

or other vibration absorbing material at least 1/3" 

to ½" thick. The pad should extend 3/4" over the 

entire base of the unit. 

Avoid direct line of sight to the unit. Install a sound 

baffle over any door that has a return air grille. 

See figure 3 for typical installation. 

Horizontal Unit Installation 

Figure 3 

Vertical units are normally installed in a closet or 

mechanical plant room. 

If installed in a closet or other confined space, 

ensure adequate space for return air to the unit. 

Horizontal units are typically suspended above the 

ceiling by four (field supplied) 3/8" threaded rods 

fastened to the unit by the factory supplied hanger 

bracket kits. The kits include rubber isolators to 

help prevent transmission of vibration and noise to 

the building structure. Units should be located 

directly below a structural member so that it is 

securely anchored. 

A horizontal unit should be positioned to allow for 

removal of the filters and access panels. Allow at 

least 18" clearance on each side of the unit for 

service and 36" in front of the unit for maintenance 

access. The filter needs to be slid out and sufficient 

space must be provided to allow this. 

Do not install the unit above any piping or electrical 

raceways. The unit should be able to be removed to 

the floor without major rearrangement of other 

mechanical or ceiling components. 

Consideration needs to be made as to the location 

of the units. Avoid installing units directly above 

occupied spaces (e.g. above office desks or classrooms). 

This will minimize possible disruption to 

the occupants if maintenance or service is required 

Revised 10-12 


6720220353

16 

EC Series 

Typical Unit Installation 

as well as keeping a potential source of noise out of 

the area. If possible, units should be installed above 

the hallway drop ceiling in schools, and the supply 

and return air is routed directly into classrooms. 

Local code may require fire dampers to be used in 

this application. 

Ductwork and Sound Attenuation 

Considerations 

Take-offs should be at 

least five feet away 

from the plenum 

Lining the first 

five feet of supply duct 

reduces noise 

Supply Air Ducting 

Turns attenuate 

blower hose 

Sound is becoming an increasingly important factor in 

Lining the first 

all HVAC installations. five feet of supply The duct EC series has been designed 

Turns attenuate 

to minimize reduces sound, noise but sound acoustical blower hose design plays 

an important part of the sound level in the space. 

Most of the problems associated Flex with HVAC 

duct 

generated sound can be avoided by paying Flex close 

Take-offs should be at 

duct 

attention to duct design and equipment placement. 

least five feet away 

from the plenum 

A discharge flange is provided on all horizontal unit 

models for fastening of ductwork. We recommend 

Return air 

using a flexible filter and collar grillebetween the discharge flange 

and the duct transformation to reduce vibration 

transmission from the cabinet and to simplify 

disconnection of the unit from the ceiling ductwork. 

Return air 

filter and grille 

Flex 

duct 

Return Air Ducting 

Flex 

duct 

Return air to the unit could be either free return or 

ducted. The filter rack is provided with a 1" flange 

should a ducted return be used. We recommend 

using a flexible collar between the return flange 

and the duct transformation to reduce vibration 

transmission from the cabinet and to simplify 

disconnection of the unit from the ductwork. 

Sound is transmitted down ductwork and it is 

important to avoid direct line of sight between the 

unit and the space, both on the return or supply 

side. To accomplish this, design the duct runs with 

two 90° turns. 

As a general recommendation, duct interiors 

should have an acoustic / thermal lining of least 1 / 2 " 

thick over the entire duct run or a minimum of the 

first 5 feet of the supply trunk. 

Line the last five diameters of duct before each 

outlet with one-inch thick sound blanket. Line 

elbows and transition pieces, as well as a short 

distance upstream and downstream of the fittings. 

Elbows, tees and dampers can create turbulence or 

distortion in the airflow. Using aerodynamic fittings 

will help in reducing this effect. Place a straight 

length of duct, 5 to 10 times the duct width, before 

the next fitting to smooth out airflow. 

Diffusers that are located in the bottom of a trunk 

duct can also produce noise. 

Balancing dampers should be located several duct 

widths upstream from an air outlet. 

Ductwork should be mounted and supported using 

isolation devices that absorb vibration. 

Applications such as Hotel, Motel, Dormitory or 

Nursing Home that use a single duct discharge are 

susceptible to noise. These applications typically 

have low static pressures and short duct lengths. In 

these applications the discharge duct must be fully 

lined and have a square elbow without turning 

vanes. A velocity not exceeding 500 to 600 fpm is 

recommended. Return air for these applications 

should enter through a sidewall grille and route up 

the stud space to a ceiling plenum. 

For horizontal heat pumps mounted in the ceiling 

plenum, an insulated return plenum is sometimes 

placed at the return air opening to further attenuate 

line-of-sight sound transmission through return 

openings. 

6720220353 


Unit Controls 

EC Series 17 

Piping 

The water loop system is typically designed using a 

“reverse return” piping system which includes a 

flow control device so that flow requirements are 

met for each zone. 

A high pressure stainless steel flexible hose kit is 

recommended to connect the unit to the building’s 

hard piping and acts as a sound attenuator for both 

the unit operating noise and hydraulic pumping 

noise. One end of the hose has a swivel fitting to 

facilitate removal of the unit for replacement or 

service. 

Hose kits come in several configurations, but in all 

cases should include supply and return shutoff ball 

valves to allow removal of a unit without the need to 

shut down the entire heat pump system. The hose 

kit may contain either a manual or automatic flow 

control that may be preset to ensure correct water 

flow to the unit. 

Other components of the hose kit may be a Y-strainer 

to prevent dirt from fouling the water coil. A blow 

down valve is recommended with the Y-strainer. 

Many installations today use variable frequency 

drives on the water loop pump as an energy saving 

measure. This requires the flow to the unit be shut 

off when it is not operating. This can be accomplished 

by including a 2-way solenoid valve in the 

hose kit, which is field wired to open when the 

compressor is energized. 

Pressure / Temperature ports should be included in 

these fittings to allow the service technician to 

measure water flow and temperatures when checking 

unit operation. 

Condensate Drain Piping 

Condensate piping can be made of steel, copper or 

PVC pipe. In most cases, PVC pipe eliminates the 

need to wrap insulation around the pipe to prevent 

sweating. 

A ¾" FPT condensate drain connection is installed 

in the unit. The condensate piping must be trapped 

at the unit and pitched away from the unit not less 

than 1/4" per foot. A vent is required after the trap 

so that the condensate will drain away from the 

unit. The vent can also act as a cleanout if the trap 

becomes clogged. The condensate drain should not 

be directly piped to a drain/waste/vent stack. See 

local codes for the correct application of condensate 

piping to drains. 

UNIT CONTROLS 

Thermostats 

The unit control may be as simple as a single stage 

thermostat or the unit may have a DDC controller 

integrated into the building management system. 

Multiple Stage Thermostats 

All external low voltage control wiring is made to 

the thermostat terminal located in the unit electrical 

box. 

Thermostats may be manual changeover, auto 

change over, programmable or non programmable 

depending on the requirements of the project. A 

full line of thermostats are available from FHP as 

an accessory. 

HOSE KITS 

Hose kits are recommended between the unit and 

system loop piping. This will help eliminate the 

transmission of vibration and noise from the unit 

to the space. 

Hoses are fire rated fiber reinforced EPDM Stainless 

Steel braid hoses with swivel connections. 

Maximum working pressure 400 PSI for sizes ½" – 

1" and 300 PSI for sizes 1 ¼" – 2". 

A variety of hose kits are available depending on 

the job requirement. 

Kit 1 Hose only either 24" or 36" long. 

Revised 10-12 


6720220353

18 

EC Series 

Performance Data 

Kit 2 Hose kit 1 with ball valves on the supply and 

return hoses. Valves have P/T (pressure/temperature) 

ports to facilitate pressure and temperature 

readings. 

Kit 3 Hose kit 2 with an automatic flow control 

valve. The design flow rate is preset at the factory 

per the design conditions and will automatically 

limit the flow to this value. This will greatly 

facilitate balancing of the fluid loop and ensuring 

each unit gets the required flow. 

Kit 4 Hose kit 3 with a Y-strainer and blow down 

valve on the supply side. The filter screen is 20 

mesh, 304 stainless steel to help prevent dirt and 

debris from entering the water coil. 

Kit 5 Hose kit 3 with a 24 v 2 position solenoid 

valve. This could be used to shut off flow to the unit 

when there is not call for heating or cooling. A 

typical application would be with VFD pumping. 

Kit 6 Hose kit 4 with a 24 v 2 position solenoid 

valve. Hose kit options are available in the accessories 

section of the BST selection software. 

Operating Limits 

FHP EC series are capable of operating over a wide 

range of conditions. For operation in a geothermal 

application or any other installation where the loop 

fluid temperature may drop below the ambient dew 

point, the extended range option is recommended. 

This consists of additional insulation on the piping 

to prevent condensation. 

• Maximum and minimum fluid conditions are at 

unit rated flow rate. 

• Maximum and minimum operating limits may not 

be combined. If one value is at either maximum 

or minimum the other two should be at normal 

operating range. 

• Entering fluid temperatures below 45°F in the 

heating mode require antifreeze. 

Operating Limits – Cooling & Heating 

Standard Unit 

Extended Range 

Option 

COOLING 

Minimum ambient air temperature °F 50 50 

Maximum ambient air temperature °F 100 100 

Minimum evaporator entering air db/wb °F 68/57 68/57 

Rated air coil entering air db/wb °F 80/67 80/67 

Maximum evaporator entering air db/wb °F 95/85 95/85 

Minimum water coil entering fluid temperature °F 50 50 

Water loop typical coil entering fluid range temperature °F 70/90 70/90 

Maximum water coil entering fluid temperature °F 110 110 

HEATING 

Minimum ambient air temperature °F 50 40 

Maximum ambient air temperature °F 100 85 

Minimum evaporator entering air db °F 50 50 

Rated air coil entering air °F 68 68 

Maximum evaporator entering air db °F 80 80 

Normal water coil entering fluid range °F 50-80 25-80 

Minimum water coil entering Fluid °F 50 20* 

* = antifreeze solution is required at these fluid temperatures. 

6720220353 


Certified Performance Data 

EC Series 19 

CERTIFIED PERFORMANCE DATA 

ARI/ISO 13256-1 PERFORMANCE DATA 

ENTERING WATER TEMPERATURES 

MODEL 

Fluid 

Flow 

Rate 

86˚F 68˚F 59°F 50°F 77˚F 32˚F 

WATER LOOP GROUND WATER GROUND LOOP 

CAPACITY AND EFFICIENCY DATA 

Cooling 

Capacity 

(WLHP) 

EER 

(WLHP) 

Heating 

Capacity 

(WLHP) 

COP 

(WLHP) 

Cooling 

Capacity 

(GWHP) 

EER 

(GWHP) 

Heating 

Capacity 

(GWHP) 

COP 

(GWHP) 

Cooling 

Capacity 

(GLHP) 

EER 

(GLHP) 

Heating 

Capacity 

(GLHP) 

COP 

(GLHP) 

EC007 2.0 6,200 12.50 8,000 5.10 7,200 20.0 6,000 4.0 6,500 15.00 4,500 3.20 

EC009 2.5 7,800 13.70 11,400 4.70 9,000 20.0 8,600 3.8 8,100 14.80 6,400 3.20 

EC012 3.0 11,000 13.00 14,500 4.50 12,400 19.0 11,500 3.6 11,500 14.50 8,700 3.10 

EC015 4.0 14,000 13.00 18,000 4.60 15,800 19.0 13,500 3.8 14,500 15.00 10,100 3.30 

EC018 5.0 18,500 13.00 24,000 4.40 21,400 19.0 18,000 3.8 19,800 14.10 13,400 3.30 

EC024 6.0 25,000 13.80 30,000 4.50 28,200 20.6 23,800 3.8 26,500 15.20 17,900 3.30 

EC030 7.0 29,000 13.00 35,000 4.30 33,000 18.6 28,400 3.8 31,000 14.40 21,000 3.30 

EC036 9.0 36,000 13.80 46,000 4.50 40,200 19.5 36,200 4.0 37,800 15.50 27,400 3.30 

EC041 9.0 38,000 12.50 49,000 4.20 40,400 16.1 39,000 3.7 39,200 14.10 28,500 3.1 

EC042 10.0 42,000 13.00 53,000 4.20 44,500 18.5 42,000 3.8 43,800 14.20 32,200 3.30 

EC048 12.0 48,000 14.00 58,000 4.80 58,000 20.6 46,600 4.2 52,000 15.40 36,800 3.50 

EC060 15.0 62,000 13.20 79,000 4.40 67,000 18.3 61,500 3.9 63,600 14.70 50,000 3.30 

EC070 16.0 68,000 13.50 80,000 4.50 76,000 19.8 68,000 4.0 70,000 15.20 53,000 3.30 

Tabulated performance data is at noted water temperatures and entering air conditions of 80.6°F DB/66.2°F WB at 

ARI/ISO 13256-1 rated CFM. 

Revised 10-12 


6720220353

20 

EC Series 

Unit Selection 

UNIT SELECTION 

To ensure that you get the optimal performance 

from your FHP heat pump it is important that they 

be selected accurately to match your design 

conditions. 

Prior to making equipment selections the zone 

conditions need to be determined. FHP Manufacturing 

recommends using a building load program to 

determine the heating and cooling loads. 

The catalog provides a wide range of entering air 

and water conditions that will meet most applications. 

The unit performance can be determined by 

referring to the data tables from page 21 to 35. 

Our Bosch Select Tools Selection Software (BST) is 

designed to provide you with a fast and accurate 

selection based on your specific conditions. This 

software is available through the commercial 

website. You may click on the BST link and request 

an account. 

The following is a typical example for a unit selection. 

Design conditions are given as follows: 

Total Cooling Load 

Sensible Cooling Load 

Total Heating Load 

Air Flow Required 

= 35.57 MBTUH 

= 29.00 MBTUH 

= 38.92 MBTUH 

= 1400 CFM 

Entering Air Temp Cooling (db/wb) = 75°F / 63°F 

Entering Air Temp Heating = 60°F 

Entering Water Temp Cooling = 80°F 

Entering Water Temp Heating = 70°F 

FHP model EC036 would not be sufficient given 

these conditions as it provides a total cooling 

capacity of 36.9 MBTUH and a sensible capacity of 

28.1 MBTUH. 

The next size unit, the EC041 has a total cooling 

capacity of 40.7 MBTUH and a sensible capacity of 

29.3 MBTUH. This meets the design conditions as 

closely as possible. 

Please be aware that interpolation between ratings 

within a table is allowed, but extrapolation is a 

method of estimating new data by expanding 

outside a known range of data points and should 

not be considered accurate. 

6720220353 


Capacity Data 

EC Series 21 

EC007 (300 CFM) 

Entering 

Fluid Temp 

(F) 

50 

60 

70 

80 

85 

90 

100 

110 

Water 

Flow 

(GPM) 

Pressure 

Drop 

(FOH) 

1 1.8 

2 6.3 

3 13.1 

1 1.7 

2 6.1 

3 12.6 

1 1.7 

2 5.9 

3 12.2 

1 1.6 

2 5.7 

3 11.8 

1 1.6 

2 5.6 

3 11.6 

1 1.6 

2 5.5 

3 11.4 

1 1.5 

2 5.4 

3 11.1 

1 1.5 

2 5.2 

3 10.8 

COOLING 

Total 

Entering Air 

Capacity 

Temp (db/wb) F 

(MBTUH) 

Sensible 

Capacity 

(MBTUH) 

Heat of 

Rejection 

(MBTUH) 

Power 

Input (kW) 

EER 

Entering 

Fluid Temp 

(F) 

Entering 

Air Temp 

(F) 

HEATING 

Total 

Capacity 

(MBTUH) 

Heat of 

Absorption 

(MBTUH) 

75/63 7.7 6.2 9.0 0.40 19.2 

60 5.2 3.5 0.50 3.0 

80/67 8.2 6.5 9.5 0.40 20.7 70 5.1 3.3 0.53 2.8 

85/71 8.7 6.7 10.1 0.39 22.2 80 5.0 3.0 0.56 2.6 

75/63 7.9 6.4 9.2 0.38 21.0 60 5.5 3.8 0.51 3.2 

80/67 8.5 6.6 9.8 0.37 23.3 30 70 5.4 3.5 0.54 2.9 

85/71 9.1 6.8 10.5 0.36 25.5 80 5.2 3.2 0.57 2.7 

75/63 8.0 6.4 9.3 0.36 22.1 60 5.6 3.9 0.51 3.2 

80/67 8.6 6.6 9.9 0.36 24.3 70 5.4 3.6 0.54 2.9 

85/71 9.2 6.8 10.5 0.35 26.6 80 5.3 3.3 0.57 2.7 

75/63 7.3 6.1 8.6 0.45 16.4 

60 5.6 4.3 0.52 3.2 

80/67 7.8 6.3 9.1 0.44 17.7 70 5.6 4.0 0.55 3.0 

85/71 8.3 6.5 9.7 0.44 19.0 80 5.6 3.7 0.59 2.8 

75/63 7.5 6.2 8.8 0.42 17.9 60 6.5 4.7 0.51 3.7 

80/67 8.0 6.4 9.4 0.42 19.3 40 70 5.5 4.3 0.56 2.9 

85/71 8.6 6.6 10.0 0.41 21.1 80 5.5 4.0 0.60 2.7 

75/63 7.6 6.2 8.9 0.41 18.7 60 6.6 4.9 0.52 3.7 

80/67 8.1 6.5 9.5 0.40 20.2 70 6.1 4.5 0.56 3.2 

85/71 8.7 6.7 10.1 0.40 22.1 80 5.5 4.1 0.60 2.7 

75/63 6.8 5.9 8.2 0.49 13.9 

60 6.9 5.2 0.52 3.9 

80/67 7.3 6.1 8.7 0.49 15.0 70 6.8 4.9 0.56 3.6 

85/71 7.8 6.3 9.3 0.49 16.1 80 6.6 4.5 0.60 3.2 

75/63 7.1 6.0 8.4 0.47 15.3 60 7.5 5.7 0.52 4.2 

80/67 7.6 6.2 9.0 0.46 16.5 50 70 7.2 5.3 0.56 3.7 

85/71 8.1 6.5 9.5 0.46 17.7 80 7.0 4.9 0.61 3.4 

75/63 7.2 6.0 8.5 0.45 15.9 60 7.6 5.9 0.52 4.3 

80/67 7.7 6.3 9.1 0.45 17.2 70 7.4 5.5 0.56 3.8 

85/71 8.2 6.5 9.6 0.45 18.5 80 7.1 5.0 0.61 3.4 

75/63 6.4 5.7 7.8 0.54 11.9 

60 7.9 6.2 0.52 4.4 

80/67 6.9 6.0 8.3 0.54 12.9 70 7.7 5.8 0.56 4.0 

85/71 7.4 6.2 8.9 0.54 13.9 80 7.5 5.4 0.61 3.6 

75/63 6.7 5.8 8.0 0.51 13.1 60 8.5 6.8 0.52 4.7 

80/67 7.1 6.1 8.5 0.51 14.0 60 70 8.2 6.3 0.57 4.2 

85/71 7.6 6.3 9.1 0.51 15.0 80 7.9 5.9 0.61 3.8 

75/63 6.8 5.8 8.1 0.50 13.6 60 8.7 7.0 0.52 4.8 

80/67 7.2 6.1 8.6 0.50 14.5 70 8.4 6.5 0.57 4.3 

85/71 7.8 6.3 9.2 0.50 15.8 80 8.1 6.1 0.62 3.8 

75/63 6.2 5.6 7.6 0.56 11.1 

60 8.8 7.2 0.52 4.9 

80/67 6.7 5.9 8.1 0.56 12.0 70 8.6 6.7 0.57 4.4 

85/71 7.1 6.1 8.6 0.56 12.7 80 8.4 6.3 0.62 4.0 

75/63 6.4 5.7 7.8 0.54 12.0 60 9.5 7.9 0.53 5.3 

80/67 6.9 6.0 8.3 0.54 13.0 70 70 9.3 7.4 0.58 4.7 

85/71 7.4 6.2 8.9 0.53 13.9 80 9.0 6.9 0.62 4.2 

75/63 6.5 5.7 7.9 0.53 12.4 60 9.8 8.2 0.53 5.4 

80/67 7.0 6.0 8.4 0.52 13.4 70 9.5 7.6 0.58 4.8 

85/71 7.5 6.3 9.0 0.52 14.5 80 9.2 7.1 0.63 4.3 

75/63 6.0 5.5 7.4 0.59 10.3 

60 9.8 8.2 0.53 5.4 

80/67 6.4 5.8 7.9 0.59 11.0 70 9.6 7.7 0.58 4.9 

85/71 6.9 6.0 8.4 0.59 11.8 80 9.3 7.2 0.63 4.3 

75/63 6.2 5.6 7.6 0.56 11.1 60 10.6 9.1 0.53 5.9 

80/67 6.7 5.9 8.1 0.56 12.0 80 70 10.3 8.5 0.58 5.2 

85/71 7.1 6.1 8.6 0.56 12.7 80 10.0 7.9 0.63 4.6 

75/63 6.3 5.7 7.7 0.55 11.5 60 10.9 9.3 0.53 6.0 

80/67 6.8 5.9 8.2 0.55 12.5 70 10.6 8.8 0.58 5.3 

85/71 7.3 6.2 8.8 0.55 13.4 80 10.2 8.2 0.64 4.7 

75/63 5.6 5.3 7.0 0.63 8.9 

80/67 6.0 5.6 7.5 0.64 9.5 

Extended Range - Anti-freeze required 

85/71 6.4 5.8 8.0 0.64 10.1 

AHRI/ISO13256-1 certified performance is rated at entering air 

75/63 5.8 5.4 7.2 0.61 9.6 conditions of 80.6°F DB and 66.2°F WB in cooling and 68°F DB in 

80/67 6.2 5.7 7.7 0.61 10.2 heating. 

85/71 6.6 5.9 8.2 0.61 10.8 

75/63 5.9 5.5 7.3 0.60 9.9 

80/67 6.3 5.7 7.8 0.60 10.6 

85/71 6.8 6.0 8.3 0.60 11.4 

75/63 5.1 5.1 6.6 0.68 7.5 

80/67 5.5 5.3 7.0 0.69 8.0 

85/71 5.9 5.7 7.5 0.69 8.6 

75/63 5.4 5.2 6.8 0.66 8.3 

80/67 5.7 5.5 7.3 0.66 8.7 

85/71 6.2 5.8 7.7 0.66 9.4 

75/63 5.4 5.3 6.9 0.65 8.4 

80/67 5.8 5.6 7.3 0.65 9.0 

85/71 6.3 5.8 7.8 0.65 9.7 

Power 

Input 

(kW) 

Tabulated unit performance does not include fan or pump power 

corrections required for AHRI/ISO standard performance ratings. 

COP 

Unit performance may be interpolated. Extrapolation is not allowed. 

For conditions other than rating conditions provided, consult the FHP 

BST selection software. 

Ratings below 40°F are with a methanol solution. 

Due to variations in installation, actual performance may vary from 

the tabulated data. Performance contained herein are as a result of 

extensive testing by FHP and are not express warranties between the 

parties and may be changed at any time. 

Continuous research and development to improve our products may 

result in a change to the current design and specifications without notice. 

Revised 10-12 


6720220353

22 

EC Series 

Capacity Data 

EC009 (350 CFM) 

Entering 

Fluid 

Temp (F) 

50 

60 

70 

80 

85 

90 

100 

110 

Water 

Flow 

(GPM) 

Pressure 

Drop 

(FOH) 

1 1.5 

2 5.2 

3 10.9 

1 1.5 

2 5.1 

3 10.5 

1 1.4 

2 4.9 

3 10.2 

1 1.4 

2 4.7 

3 9.8 

1 1.3 

2 4.7 

3 9.7 

1 1.3 

2 4.6 

3 9.5 

1 1.3 

2 4.5 

3 9.2 

1 1.2 

2 4.3 

3 9 

Entering Air 

Temp 

(db/wb) F 

COOLING 

Total 

Capacity 

(MBTUH) 

Sensible 

Capacity 

(MBTUH) 

Heat of 

Rejection 

(MBTUH) 

Power 

Input 

(kW) 

EER 

Entering 

Fluid Temp 

(F) 

Entering 

Air 

Temp 

(F) 

HEATING 

Total 

Capacity 

(MBTUH) 

Heat of 

Absorption 

(MBTUH) 

75/63 9.8 7.5 11.3 0.52 19.0 

60 6.2 4.2 0.58 3.1 

80/67 10.4 7.8 12.0 0.52 20.3 70 6.6 1.8 0.60 3.2 

85/71 11.1 8.0 12.8 0.51 21.7 80 6.5 1.7 0.64 3.0 

75/63 10.2 7.7 11.7 0.46 22.1 60 6.7 4.6 0.58 3.3 

80/67 10.9 8.0 12.4 0.46 24.0 30 70 6.7 2.9 0.62 3.2 

85/71 11.6 8.2 13.2 0.45 26.1 80 5.8 4.8 0.67 2.5 

75/63 10.3 7.7 11.8 0.45 23.1 60 6.8 4.8 0.59 3.4 

80/67 11.0 8.0 12.5 0.44 25.3 70 6.4 3.6 0.63 3.0 

85/71 11.8 8.3 13.3 0.43 27.8 80 6.8 4.1 0.68 2.9 

75/63 9.3 7.3 11.0 0.58 16.2 

60 7.1 5.1 0.59 3.5 

80/67 10.0 7.6 11.7 0.58 17.4 70 7.3 3.4 0.63 3.4 

85/71 10.6 7.8 12.4 0.58 18.5 80 7.3 2.4 0.66 3.2 

75/63 9.7 7.5 11.3 0.53 18.5 60 7.8 5.7 0.60 3.8 

80/67 10.4 7.7 12.0 0.52 20.1 40 70 7.7 5.3 0.65 3.5 

85/71 11.1 8.0 12.8 0.51 21.7 80 7.9 3.2 0.69 3.4 

75/63 9.8 7.5 11.4 0.51 19.2 60 8.0 6.0 0.60 3.9 

80/67 10.5 7.8 12.1 0.50 20.9 70 7.8 5.7 0.65 3.5 

85/71 11.3 8.1 12.9 0.49 22.9 80 7.9 3.5 0.69 3.3 

75/63 8.9 7.1 10.6 0.64 14.1 

60 8.2 6.2 0.61 4.0 

80/67 9.5 7.3 11.3 0.64 14.9 70 8.1 5.8 0.66 3.6 

85/71 10.1 7.6 12.0 0.64 15.8 80 7.9 5.4 0.71 3.3 

75/63 9.2 7.2 10.9 0.59 15.6 60 8.9 6.8 0.61 4.2 

80/67 9.9 7.5 11.6 0.59 16.9 50 70 8.9 6.3 0.67 3.9 

85/71 10.6 7.7 12.3 0.58 18.3 80 8.8 4.3 0.71 3.6 

75/63 9.3 7.3 11.0 0.58 16.2 60 9.3 7.2 0.62 4.4 

80/67 10.0 7.6 11.7 0.57 17.6 70 9.0 6.7 0.67 3.9 

85/71 10.7 7.8 12.4 0.56 19.0 80 8.1 7.8 0.73 3.3 

75/63 8.4 6.9 10.2 0.70 12.1 

60 9.3 7.3 0.62 4.4 

80/67 9.0 7.1 10.9 0.70 12.9 70 9.1 6.8 0.67 4.0 

85/71 9.6 7.4 11.5 0.71 13.7 80 9.0 6.5 0.73 3.6 

75/63 8.7 7.0 10.5 0.66 13.3 60 10.2 8.1 0.63 4.8 

80/67 9.3 7.3 11.2 0.66 14.3 60 70 9.7 7.4 0.68 4.2 

85/71 10.0 7.6 11.9 0.65 15.4 80 9.8 7.0 0.74 3.9 

75/63 8.8 7.1 10.5 0.64 13.7 60 10.6 8.4 0.63 4.9 

80/67 9.4 7.3 11.3 0.64 14.7 70 10.3 8.0 0.69 4.4 

85/71 10.1 7.6 12.0 0.64 15.9 80 9.9 7.2 0.74 3.9 

75/63 8.1 6.8 10.0 0.73 11.2 

60 10.4 8.4 0.63 4.8 

80/67 8.7 7.0 10.7 0.73 11.9 70 10.3 7.9 0.69 4.4 

85/71 9.3 7.3 11.3 0.74 12.7 80 10.1 7.5 0.75 3.9 

75/63 8.4 6.9 10.3 0.69 12.2 60 11.4 9.4 0.63 5.3 

80/67 9.1 7.2 10.9 0.69 13.3 70 70 11.2 8.9 0.70 4.7 

85/71 9.7 7.5 11.6 0.69 14.2 80 8.6 14.2 0.77 3.3 

75/63 8.5 7.0 10.3 0.68 12.6 60 11.9 9.9 0.64 5.5 

80/67 9.2 7.2 11.0 0.68 13.7 70 11.6 9.3 0.70 4.8 

85/71 9.8 7.4 11.8 0.67 14.6 80 11.2 8.8 0.77 4.3 

75/63 7.9 6.6 9.8 0.76 10.4 

60 11.5 9.5 0.64 5.3 

80/67 8.4 6.9 10.4 0.77 11.0 70 11.3 9.0 0.70 4.7 

85/71 9.0 7.2 11.1 0.77 11.7 80 11.1 8.5 0.76 4.2 

75/63 8.2 6.8 10.1 0.72 11.4 60 12.8 10.7 0.64 5.8 

80/67 8.8 7.1 10.7 0.72 12.2 80 70 12.5 10.2 0.71 5.1 

85/71 9.4 7.3 11.4 0.72 13.0 80 12.4 9.7 0.78 4.7 

75/63 8.3 6.9 10.1 0.71 11.7 60 13.3 11.3 0.64 6.0 

80/67 8.9 7.1 10.8 0.71 12.5 70 12.9 10.6 0.71 5.3 

85/71 9.5 7.4 11.5 0.71 13.4 80 12.7 9.8 0.78 4.7 

75/63 7.4 6.4 9.4 0.83 9.0 

80/67 7.9 6.7 10.0 0.83 9.5 

85/71 8.4 7.0 10.6 0.84 10.0 


75/63 7.7 6.5 9.6 0.79 9.7 

80/67 8.2 6.8 10.3 0.80 10.4 

85/71 8.8 7.1 10.9 0.80 11.1 

75/63 7.7 6.6 9.7 0.78 9.9 

80/67 8.3 6.9 10.3 0.79 10.6 

85/71 8.9 7.2 11.0 0.78 11.4 

75/63 6.9 6.2 9.0 0.89 7.8 

80/67 7.4 6.5 9.6 0.90 8.2 

85/71 7.9 6.7 10.2 0.91 8.7 

75/63 7.1 6.3 9.2 0.87 8.2 

80/67 7.6 6.6 9.8 0.87 8.8 

85/71 8.2 6.8 10.4 0.88 9.4 

75/63 7.1 6.3 9.2 0.86 8.3 

80/67 7.7 6.6 9.9 0.86 9.0 

85/71 8.3 6.9 10.5 0.86 9.7 

Power 

Input 

(kW) 

COP 


conditions of 80.6°F DB and 66.2°F WB in cooling and 68°F DB in 

heating. 













6720220353 


Capacity Data 

EC Series 23 

EC012 (400 CFM) 

Entering 

Fluid 

Temp (F) 

50 

60 

70 

80 

85 

90 

100 

110 

Water 

Flow 

(GPM) 

Pressure 

Drop 

(FOH) 

1.5 3.4 

2.5 8.5 

3.5 15.5 

1.5 3.3 

2.5 8.2 

3.5 15 

1.5 3.2 

2.5 7.9 

3.5 14.5 

1.5 3.1 

2.5 7.7 

3.5 14.1 

1.5 3 

2.5 7.5 

3.5 13.8 

1.5 3 

2.5 7.4 

3.5 13.6 

1.5 2.9 

2.5 7.2 

3.5 13.2 

1.5 2.8 

2.5 7 

3.5 12.8 

Entering Air 

Temp 

(db/wb) F 

COOLING 

Total 

Capacity 

(MBTUH) 

Sensible 

Capacity 

(MBTUH) 

Heat of 

Rejection 

(MBTUH) 

Power 

Input 

(kW) 

EER 

Entering 

Fluid Temp 

(F) 

Entering 

Air 

Temp 

(F) 

HEATING 

Total 

Capacity 

(MBTUH) 

Heat of 

Absorption 

(MBTUH) 

75/63 11.9 9.2 14.1 0.68 17.5 

60 8.2 5.4 0.85 2.8 

80/67 12.8 9.4 15.0 0.68 18.8 70 8.1 5.1 0.91 2.6 

85/71 13.5 9.7 15.7 0.68 19.9 80 8.0 4.7 0.96 2.4 

75/63 12.3 9.5 14.4 0.63 19.5 60 8.6 5.7 0.86 2.9 

80/67 13.1 9.6 15.2 0.63 20.9 30 70 8.4 5.3 0.92 2.7 

85/71 14.0 9.9 16.1 0.62 22.6 80 8.2 4.9 0.98 2.5 

75/63 12.5 9.5 14.5 0.61 20.5 60 8.8 5.9 0.87 3.0 

80/67 13.3 9.7 15.3 0.60 22.1 70 8.6 5.5 0.93 2.7 

85/71 14.3 10.0 16.3 0.59 24.1 80 8.4 5.1 0.98 2.5 

75/63 11.3 8.9 13.5 0.76 15.0 

60 9.4 6.5 0.89 3.1 

80/67 12.1 9.1 14.4 0.76 15.9 70 9.2 6.1 0.95 2.8 

85/71 12.9 9.4 15.2 0.76 16.9 80 9.1 5.7 1.02 2.6 

75/63 11.6 9.0 13.8 0.71 16.3 60 9.9 6.9 0.90 3.2 

80/67 12.5 9.3 14.7 0.71 17.7 40 70 9.7 6.4 0.97 2.9 

85/71 13.4 9.7 15.7 0.70 19.0 80 9.4 6.0 1.03 2.7 

75/63 11.8 9.1 13.9 0.69 17.1 60 10.1 7.1 0.91 3.3 

80/67 12.7 9.4 14.8 0.69 18.5 70 9.9 6.6 0.98 3.0 

85/71 13.6 9.8 15.8 0.68 20.0 80 9.7 6.1 1.04 2.7 

75/63 10.7 8.6 13.1 0.83 12.8 

60 10.7 7.7 0.93 3.4 

80/67 11.5 9.0 14.0 0.84 13.7 70 10.5 7.2 1.00 3.1 

85/71 12.2 9.3 14.8 0.85 14.4 80 10.2 6.7 1.07 2.8 

75/63 11.0 8.7 13.4 0.79 13.9 60 11.2 8.2 0.95 3.5 

80/67 11.8 9.2 14.2 0.79 14.9 50 70 11.0 7.6 1.02 3.2 

85/71 12.6 9.5 15.1 0.79 15.9 80 10.8 7.1 1.09 2.9 

75/63 11.2 8.8 13.5 0.77 14.5 60 11.5 8.5 0.95 3.5 

80/67 12.0 9.2 14.4 0.77 15.6 70 11.2 7.8 1.03 3.2 

85/71 12.8 9.4 15.2 0.77 16.7 80 11.0 7.3 1.10 2.9 

75/63 10.1 8.4 12.7 0.91 11.0 

60 12.1 9.0 0.96 3.7 

80/67 10.8 8.8 13.5 0.92 11.7 70 11.8 8.4 1.04 3.3 

85/71 11.6 9.1 14.3 0.93 12.4 80 11.6 7.8 1.12 3.0 

75/63 10.4 8.5 12.9 0.87 11.9 60 12.8 9.8 0.96 3.9 

80/67 11.2 8.9 13.7 0.88 12.8 60 70 12.5 9.1 1.05 3.5 

85/71 12.0 9.2 14.6 0.88 13.6 80 12.1 8.5 1.13 3.1 

75/63 10.5 8.5 13.0 0.86 12.3 60 13.2 10.1 0.97 4.0 

80/67 11.4 8.9 13.9 0.86 13.3 70 12.8 9.4 1.05 3.6 

85/71 12.2 9.3 14.7 0.86 14.2 80 12.5 8.7 1.14 3.2 

75/63 9.8 8.3 12.5 0.96 10.2 

60 13.6 10.5 0.97 4.1 

80/67 10.5 8.6 13.2 0.97 10.9 70 13.2 9.9 1.06 3.6 

85/71 11.2 8.9 14.0 0.98 11.5 80 13.1 9.2 1.15 3.4 

75/63 10.1 8.4 12.7 0.92 11.0 60 14.5 11.4 0.98 4.3 

80/67 10.9 8.7 13.5 0.92 11.8 70 70 14.1 10.7 1.07 3.9 

85/71 11.6 9.1 14.3 0.93 12.5 80 13.7 10.0 1.16 3.5 

75/63 10.3 8.5 12.8 0.90 11.4 60 14.9 11.8 0.99 4.4 

80/67 11.0 8.8 13.6 0.90 12.2 70 14.6 11.0 1.08 4.0 

85/71 11.8 9.2 14.4 0.91 13.0 80 14.0 10.3 1.17 3.5 

75/63 9.5 8.2 12.2 1.00 9.5 

60 15.1 12.1 1.00 4.4 

80/67 10.2 8.5 13.0 1.01 10.1 70 14.8 11.4 1.08 4.0 

85/71 10.9 8.8 13.8 1.02 10.7 80 14.5 10.7 1.18 3.6 

75/63 9.8 8.3 12.5 0.96 10.2 60 16.1 13.0 1.02 4.7 

80/67 10.5 8.6 13.2 0.97 10.9 80 70 15.9 12.2 1.10 4.2 

85/71 11.2 8.9 14.0 0.97 11.5 80 15.6 11.4 1.19 3.9 

75/63 9.9 8.3 12.5 0.94 10.5 60 16.6 13.4 1.02 4.8 

80/67 10.6 8.7 13.3 0.95 11.2 70 16.2 12.6 1.11 4.3 

85/71 11.4 9.0 14.2 0.95 12.0 80 15.9 11.9 1.20 3.9 

75/63 8.9 7.9 11.7 1.08 8.2 

80/67 9.5 8.2 12.5 1.10 8.7 


85/71 10.1 8.5 13.2 1.11 9.1 

75/63 9.1 7.8 11.9 1.05 8.7 

80/67 9.8 8.3 12.7 1.06 9.3 

85/71 10.5 8.6 13.5 1.07 9.8 

75/63 9.2 7.9 12.0 1.03 8.9 

80/67 9.9 8.4 12.8 1.04 9.5 

85/71 10.6 8.7 13.6 1.05 10.1 

75/63 8.1 7.7 11.2 1.17 6.9 

80/67 8.7 8.0 11.9 1.18 7.3 

85/71 9.4 8.2 12.7 1.20 7.8 

75/63 8.4 7.7 11.4 1.14 7.4 

80/67 9.1 8.0 12.2 1.15 7.9 

85/71 9.7 8.2 12.9 1.16 8.4 

75/63 8.4 7.8 11.4 1.12 7.5 

80/67 9.2 8.1 12.3 1.14 8.1 

85/71 9.8 8.2 13.0 1.14 8.6 

Power 

Input 

(kW) 

COP 



heating. 













Revised 10-12 


6720220353

24 

EC Series 

Capacity Data 

EC015 (500 CFM) 

Entering 

Fluid 

Temp (F) 

50 

60 

70 

80 

85 

90 

100 

110 

Water 

Flow 

(GPM) 

Pressure 

Drop 

(FOH) 

2 4.2 

3 8.7 

4.5 18.1 

2 4.1 

3 8.4 

4.5 17.5 

2 3.9 

3 8.2 

4.5 16.9 

2 3.8 

3 7.9 

4.5 16.4 

2 3.8 

3 7.8 

4.5 16.1 

2 3.7 

3 7.7 

4.5 15.9 

2 3.6 

3 7.4 

4.5 15.4 

2 3.5 

3 7.2 

4.5 15 

Entering Air 

Temp 

(db/wb) F 

COOLING 

Total 

Capacity 

(MBTUH) 

Sensible 

Capacity 

(MBTUH) 

Heat of 

Rejection 

(MBTUH) 

Power 

Input 

(kW) 

EER 

Entering 

Fluid Temp 

(F) 

Entering 

Air 

Temp 

(F) 

HEATING 

Total 

Capacity 

(MBTUH) 

Heat of 

Absorption 

(MBTUH) 

75/63 15.8 12.2 18.2 0.74 21.3 

60 11.3 8.0 0.96 3.4 

80/67 16.8 12.6 19.3 0.73 22.9 70 11.1 7.4 1.04 3.1 

85/71 17.9 12.9 20.4 0.72 24.8 80 10.9 6.9 1.12 2.9 

75/63 16.2 12.4 18.5 0.69 23.5 60 11.7 8.4 0.97 3.5 

80/67 17.3 12.8 19.6 0.67 25.6 30 70 11.5 7.8 1.05 3.2 

85/71 18.4 13.1 20.8 0.66 28.0 80 11.3 7.2 1.13 2.9 

75/63 16.5 12.5 18.7 0.65 25.2 60 12.0 8.6 0.98 3.6 

80/67 17.6 12.9 19.9 0.63 27.7 70 11.7 8.0 1.06 3.3 

85/71 18.8 13.2 21.1 0.61 30.6 80 11.5 7.4 1.14 3.0 

75/63 15.0 11.9 17.6 0.84 17.8 

60 13.0 9.6 0.99 3.9 

80/67 16.0 12.2 18.7 0.84 19.1 70 12.7 9.0 1.08 3.5 

85/71 17.0 12.6 19.7 0.83 20.5 80 12.4 8.3 1.16 3.1 

75/63 15.4 12.0 17.9 0.79 19.4 60 13.5 10.1 1.00 4.0 

80/67 16.5 12.4 19.0 0.78 21.1 40 70 13.2 9.4 1.08 3.6 

85/71 17.5 12.8 20.1 0.77 22.8 80 12.9 8.7 1.17 3.2 

75/63 15.6 12.2 18.1 0.76 20.5 60 13.9 10.4 1.00 4.1 

80/67 16.8 12.5 19.2 0.74 22.6 70 13.5 9.7 1.09 3.6 

85/71 17.9 12.9 20.4 0.73 24.6 80 13.2 9.0 1.18 3.3 

75/63 14.2 11.5 17.0 0.95 15.0 

60 14.7 11.3 1.01 4.3 

80/67 15.1 11.9 18.0 0.94 16.0 70 14.4 10.6 1.10 3.8 

85/71 16.1 12.2 19.0 0.94 17.2 80 14.1 9.9 1.20 3.5 

75/63 14.6 11.7 17.3 0.90 16.2 60 15.4 11.9 1.02 4.4 

80/67 15.6 12.1 18.3 0.89 17.5 50 70 15.0 11.2 1.11 4.0 

85/71 16.6 12.4 19.4 0.88 18.9 80 14.7 10.4 1.21 3.6 

75/63 14.8 11.8 17.5 0.87 17.1 60 15.8 12.4 1.02 4.5 

80/67 15.8 12.2 18.5 0.85 18.5 70 15.4 11.6 1.12 4.0 

85/71 16.9 12.6 19.6 0.84 20.1 80 15.0 10.8 1.21 3.6 

75/63 13.4 11.2 16.4 1.05 12.7 

60 16.6 13.1 1.03 4.7 

80/67 14.3 11.6 17.3 1.05 13.6 70 16.2 12.3 1.13 4.2 

85/71 15.2 11.9 18.3 1.05 14.5 80 15.9 11.6 1.23 3.8 

75/63 13.7 11.3 16.6 1.00 13.6 60 17.3 13.9 1.04 4.9 

80/67 14.7 11.7 17.6 1.00 14.7 60 70 16.9 13.0 1.14 4.4 

85/71 15.6 12.1 18.6 0.99 15.7 80 16.4 12.2 1.24 3.9 

75/63 13.9 11.4 16.8 0.97 14.2 60 17.9 14.4 1.04 5.0 

80/67 14.9 11.8 17.8 0.97 15.4 70 17.4 13.5 1.14 4.5 

85/71 15.9 12.2 18.9 0.96 16.6 80 16.9 12.6 1.25 4.0 

75/63 12.9 11.0 16.0 1.10 11.7 

60 18.5 15.0 1.05 5.2 

80/67 13.8 11.4 17.0 1.10 12.5 70 18.0 14.1 1.15 4.6 

85/71 14.7 11.8 18.0 1.10 13.3 80 17.6 13.3 1.26 4.1 

75/63 13.3 11.1 16.3 1.06 12.5 60 19.4 15.9 1.05 5.4 

80/67 14.2 11.6 17.3 1.06 13.4 70 70 18.9 15.0 1.16 4.8 

85/71 15.2 11.9 18.3 1.05 14.4 80 18.4 14.0 1.27 4.3 

75/63 13.5 11.2 16.5 1.03 13.1 60 20.0 16.6 1.06 5.6 

80/67 14.5 11.6 17.5 1.02 14.1 70 19.4 15.5 1.16 4.9 

85/71 15.5 12.0 18.5 1.02 15.2 80 18.9 14.5 1.27 4.4 

75/63 12.5 10.9 15.7 1.16 10.8 

60 20.6 16.9 1.06 5.7 

80/67 13.4 11.2 16.7 1.16 11.5 70 19.9 16.0 1.17 5.0 

85/71 14.3 11.6 17.6 1.16 12.3 80 19.4 15.1 1.28 4.4 

75/63 12.9 11.0 16.0 1.11 11.6 60 21.6 18.0 1.06 6.0 

80/67 13.8 11.4 16.9 1.11 12.4 80 70 20.9 17.0 1.18 5.2 

85/71 14.7 11.8 17.9 1.11 13.2 80 20.3 15.9 1.29 4.6 

75/63 13.1 11.1 16.1 1.09 12.0 60 22.3 18.7 1.07 6.1 

80/67 14.0 11.5 17.1 1.08 12.9 70 21.5 17.7 1.18 5.3 

85/71 15.0 11.8 18.2 1.07 13.9 80 20.9 16.6 1.30 4.7 

75/63 11.7 10.2 15.1 1.26 9.2 

80/67 12.5 10.9 16.0 1.27 9.8 

85/71 13.4 11.3 16.9 1.27 10.5 

75/63 12.0 10.6 15.3 1.22 9.8 


80/67 12.9 11.0 16.3 1.23 10.5 

85/71 13.7 11.5 17.2 1.22 11.2 

75/63 12.2 10.7 15.5 1.20 10.2 

80/67 13.1 11.1 16.4 1.20 10.9 

85/71 14.0 11.5 17.4 1.19 11.7 

75/63 10.8 9.8 14.5 1.37 7.8 

80/67 11.6 10.3 15.3 1.38 8.4 

85/71 12.4 11.0 16.2 1.38 9.0 

75/63 11.1 9.9 14.6 1.34 8.3 

80/67 11.9 10.4 15.5 1.34 8.9 

85/71 12.8 11.1 16.5 1.34 9.5 

75/63 11.3 10.0 14.8 1.31 8.6 

80/67 12.1 10.5 15.7 1.31 9.2 

85/71 13.0 11.2 16.7 1.31 9.9 

Power 

Input 

(kW) 

COP 



heating. 













6720220353 


Capacity Data 

EC Series 25 

EC018 (650 CFM) 

Entering 

Fluid 

Temp (F) 

50 

60 

70 

80 

85 

90 

100 

110 

Water 

Flow 

(GPM) 

Pressure 

Drop 

(FOH) 

2.5 6.3 

4 14.7 

5 21.9 

2.5 6.1 

4 14.2 

5 21.2 

2.5 5.9 

4 13.7 

5 20.5 

2.5 5.7 

4 13.3 

5 19.8 

2.5 5.6 

4 13.1 

5 19.5 

2.5 5.5 

4 12.9 

5 19.2 

2.5 5.4 

4 12.5 

5 18.7 

2.5 5.2 

4 12.1 

5 18.1 

Entering Air 

Temp 

(db/wb) F 

COOLING 

Total 

Capacity 

(MBTUH) 

Sensible 

Capacity 

(MBTUH) 

Heat of 

Rejection 

(MBTUH) 

Power 

Input 

(kW) 

EER 

Entering 

Fluid Temp 

(F) 

Entering 

Air 

Temp 

(F) 

HEATING 

Total 

Capacity 

(MBTUH) 

Heat of 

Absorption 

(MBTUH) 

75/63 23.5 16.9 27.1 1.15 20.5 

60 13.8 10.1 1.18 3.4 

80/67 25.4 17.4 29.0 1.14 22.3 70 13.0 9.1 1.22 3.1 

85/71 27.3 18.0 31.0 1.13 24.1 80 12.2 8.2 1.26 2.8 

75/63 24.4 17.3 27.8 1.07 22.8 60 14.6 10.8 1.21 3.5 

80/67 26.5 17.9 30.0 1.06 25.1 30 70 13.7 9.8 1.25 3.2 

85/71 28.5 18.8 32.1 1.04 27.5 80 12.8 8.7 1.28 2.9 

75/63 24.7 17.5 28.1 1.05 23.6 60 14.9 11.1 1.21 3.6 

80/67 26.7 18.2 30.2 1.03 26.0 70 14.0 10.0 1.26 3.3 

85/71 28.9 19.0 32.4 1.00 28.9 80 13.1 8.9 1.29 3.0 

75/63 22.2 16.3 25.9 1.25 17.8 

60 16.6 12.7 1.26 3.8 

80/67 24.0 16.9 27.7 1.25 19.2 70 15.8 11.7 1.32 3.5 

85/71 25.8 17.4 29.7 1.25 20.6 80 15.0 10.6 1.36 3.2 

75/63 23.1 16.7 26.7 1.19 19.5 60 17.7 13.7 1.29 4.0 

80/67 25.0 17.3 28.6 1.18 21.3 40 70 16.8 12.5 1.35 3.7 

85/71 26.9 17.9 30.7 1.16 23.2 80 15.8 11.4 1.39 3.3 

75/63 23.4 16.8 26.9 1.16 20.2 60 18.1 14.0 1.30 4.1 

80/67 25.3 17.4 28.9 1.15 22.0 70 17.1 12.8 1.36 3.7 

85/71 27.3 18.0 31.0 1.13 24.2 80 16.1 11.6 1.41 3.4 

75/63 20.9 15.7 24.7 1.35 15.5 

60 19.7 15.5 1.34 4.3 

80/67 22.6 16.8 26.5 1.36 16.6 70 18.8 14.3 1.41 3.9 

85/71 24.3 17.3 28.4 1.37 17.8 80 17.9 13.1 1.47 3.6 

75/63 21.6 16.0 25.4 1.30 16.7 60 21.0 16.7 1.38 4.5 

80/67 23.5 16.6 27.3 1.29 18.2 50 70 20.0 15.4 1.44 4.1 

85/71 25.5 17.7 29.4 1.29 19.8 80 19.0 14.1 1.51 3.7 

75/63 21.9 16.2 25.6 1.28 17.2 60 21.5 17.1 1.39 4.5 

80/67 23.8 16.8 27.6 1.27 18.8 70 20.4 15.8 1.46 4.1 

85/71 25.8 17.9 29.7 1.26 20.5 80 19.6 14.3 1.52 3.8 

75/63 19.5 15.2 23.4 1.45 13.4 

60 22.8 18.4 1.42 4.7 

80/67 21.0 16.1 25.1 1.47 14.3 70 21.8 17.1 1.50 4.3 

85/71 22.7 16.7 26.9 1.48 15.3 80 20.8 15.8 1.57 3.9 

75/63 20.2 15.6 24.1 1.40 14.4 60 24.4 19.9 1.46 4.9 

80/67 22.0 16.5 26.0 1.41 15.6 60 70 23.3 18.4 1.54 4.4 

85/71 23.7 17.1 27.9 1.41 16.8 80 22.4 16.8 1.61 4.1 

75/63 20.5 15.7 24.3 1.38 14.8 60 25.0 20.4 1.47 5.0 

80/67 22.3 16.6 26.2 1.39 16.1 70 23.8 18.9 1.55 4.5 

85/71 24.1 17.2 28.2 1.39 17.4 80 22.9 17.2 1.63 4.1 

75/63 18.7 15.0 22.6 1.50 12.5 

60 26.0 21.3 1.49 5.1 

80/67 20.3 15.9 24.5 1.52 13.4 70 24.9 19.9 1.58 4.6 

85/71 21.9 16.4 26.2 1.54 14.3 80 24.1 18.4 1.67 4.2 

75/63 19.5 15.2 23.4 1.45 13.4 60 27.9 23.1 1.53 5.3 

80/67 21.1 16.2 25.2 1.46 14.4 70 70 26.7 21.5 1.63 4.8 

85/71 22.9 16.8 27.1 1.47 15.6 80 25.7 19.7 1.72 4.4 

75/63 19.7 15.3 23.6 1.44 13.7 60 28.5 23.8 1.54 5.4 

80/67 21.4 16.3 25.5 1.45 14.8 70 27.3 22.1 1.64 4.9 

85/71 23.2 16.9 27.4 1.45 16.1 80 26.0 20.5 1.73 4.4 

75/63 18.0 14.9 22.0 1.55 11.7 

60 29.2 24.4 1.55 5.5 

80/67 19.5 15.5 23.7 1.57 12.5 70 28.3 22.7 1.66 5.0 

85/71 21.0 16.1 25.4 1.59 13.2 80 27.2 21.1 1.76 4.5 

75/63 18.6 15.0 22.6 1.50 12.4 60 31.4 26.5 1.59 5.8 

80/67 20.3 15.9 24.4 1.52 13.4 80 70 30.0 24.7 1.71 5.2 

85/71 22.0 16.5 26.3 1.53 14.4 80 29.0 22.7 1.81 4.7 

75/63 18.9 15.1 22.8 1.49 12.7 60 32.1 27.2 1.61 5.9 

80/67 20.5 16.0 24.7 1.50 13.7 70 30.8 25.4 1.72 5.2 

85/71 22.3 16.6 26.6 1.51 14.8 80 29.6 23.3 1.83 4.7 

75/63 16.5 13.9 20.6 1.63 10.1 

80/67 17.8 14.9 22.2 1.66 10.7 

85/71 19.4 15.6 23.9 1.69 11.5 


75/63 17.1 14.5 21.1 1.60 10.7 

80/67 18.6 15.2 22.9 1.62 11.5 

85/71 20.2 15.8 24.7 1.64 12.3 

75/63 17.2 14.6 21.3 1.59 10.9 

80/67 18.9 15.3 23.1 1.61 11.8 

85/71 20.5 15.9 24.9 1.62 12.6 

75/63 14.9 13.4 19.1 1.71 8.8 

80/67 16.3 14.0 20.6 1.75 9.4 

85/71 17.6 15.0 22.3 1.78 9.9 

75/63 15.4 13.6 19.6 1.68 9.2 

80/67 16.9 14.3 21.2 1.71 9.9 

85/71 18.4 15.2 23.0 1.75 10.6 

75/63 15.6 13.6 19.7 1.67 9.3 

80/67 17.0 14.3 21.4 1.70 10.0 

85/71 18.6 15.3 23.2 1.73 10.7 

Power 

Input 

(kW) 

COP 



heating. 













Revised 10-12 


6720220353

26 

EC Series 

Capacity Data 

EC024 (850 CFM) 

Entering 

Fluid 

Temp (F) 

50 

60 

70 

80 

85 

90 

100 

110 

Water 

Flow 

(GPM) 

Pressure 

Drop 

(FOH) 

3 3.8 

5 9.5 

7 17.4 

3 3.7 

5 9.2 

7 16.8 

3 3.5 

5 8.9 

7 16.3 

3 3.4 

5 8.6 

7 15.8 

3 3.4 

5 8.5 

7 15.5 

3 3.3 

5 8.3 

7 15.3 

3 3.2 

5 8.1 

7 14.8 

3 3.1 

5 7.9 

7 14.4 

Entering Air 

Temp 

(db/wb) F 

COOLING 

Total 

Capacity 

(MBTUH) 

Sensible 

Capacity 

(MBTUH) 

Heat of 

Rejection 

(MBTUH) 

Power 

Input 

(kW) 

EER 

Entering 

Fluid Temp 

(F) 

Entering 

Air 

Temp 

(F) 

HEATING 

Total 

Capacity 

(MBTUH) 

Heat of 

Absorption 

(MBTUH) 

75/63 28.1 20.8 32.1 1.32 21.3 

60 16.6 12.2 1.37 3.6 

80/67 30.1 21.5 34.3 1.32 22.9 70 15.8 11.1 1.43 3.2 

85/71 32.2 22.1 36.4 1.30 24.7 80 15.1 10.0 1.49 3.0 

75/63 29.4 21.4 33.2 1.22 24.2 60 17.8 13.2 1.41 3.7 

80/67 31.6 22.1 35.5 1.20 26.4 30 70 16.9 12.0 1.47 3.4 

85/71 33.9 22.7 37.8 1.17 29.0 80 15.9 10.9 1.53 3.1 

75/63 29.9 21.6 33.7 1.17 25.6 60 18.3 13.7 1.43 3.8 

80/67 32.2 22.3 36.1 1.14 28.2 70 17.4 12.5 1.49 3.4 

85/71 34.6 23.0 38.5 1.10 31.3 80 16.4 11.3 1.55 3.1 

75/63 26.6 20.1 30.8 1.45 18.4 

60 19.7 14.9 1.47 3.9 

80/67 28.6 20.8 32.9 1.45 19.8 70 18.8 13.8 1.55 3.6 

85/71 30.6 21.4 35.0 1.44 21.2 80 17.9 12.6 1.62 3.2 

75/63 27.8 20.7 31.9 1.35 20.6 60 21.1 16.2 1.52 4.1 

80/67 29.9 21.4 34.1 1.33 22.4 40 70 20.2 15.0 1.60 3.7 

85/71 32.2 22.0 36.4 1.31 24.5 80 19.2 13.7 1.67 3.4 

75/63 28.3 20.9 32.3 1.30 21.7 60 21.9 16.9 1.54 4.2 

80/67 30.6 21.6 34.6 1.28 23.8 70 20.9 15.6 1.62 3.8 

85/71 32.8 22.3 37.0 1.26 26.1 80 19.8 14.2 1.69 3.4 

75/63 25.0 19.5 29.4 1.57 15.9 

60 22.9 17.9 1.57 4.3 

80/67 26.9 20.2 31.4 1.58 17.0 70 22.1 16.7 1.66 3.9 

85/71 28.8 20.9 33.5 1.58 18.2 80 21.3 15.4 1.75 3.6 

75/63 26.2 19.9 30.5 1.48 17.7 60 24.8 19.6 1.63 4.5 

80/67 28.2 20.7 32.6 1.48 19.1 50 70 23.7 18.2 1.72 4.0 

85/71 30.3 21.3 34.8 1.47 20.7 80 23.0 16.7 1.81 3.7 

75/63 26.7 20.1 30.9 1.44 18.5 60 25.7 20.4 1.65 4.6 

80/67 28.8 20.9 33.1 1.43 20.2 70 24.6 19.0 1.75 4.1 

85/71 31.0 21.7 35.3 1.41 22.0 80 23.8 17.3 1.83 3.8 

75/63 23.5 18.7 28.0 1.69 13.9 

60 26.4 21.1 1.67 4.6 

80/67 25.2 19.6 29.9 1.71 14.7 70 25.5 19.8 1.77 4.2 

85/71 27.1 20.1 31.9 1.72 15.7 80 24.6 18.4 1.87 3.9 

75/63 24.5 19.2 28.9 1.61 15.2 60 28.6 23.1 1.73 4.9 

80/67 26.5 19.9 31.0 1.62 16.4 60 70 27.5 21.6 1.84 4.4 

85/71 28.4 20.7 33.1 1.62 17.6 80 26.4 20.0 1.94 4.0 

75/63 24.9 19.5 29.3 1.58 15.8 60 29.7 24.1 1.75 5.0 

80/67 27.0 20.1 31.5 1.58 17.1 70 28.5 22.5 1.86 4.5 

85/71 29.0 21.0 33.7 1.57 18.5 80 27.2 20.9 1.97 4.0 

75/63 22.6 18.4 27.2 1.75 12.9 

60 30.3 24.3 1.76 5.1 

80/67 24.3 19.1 29.1 1.77 13.7 70 29.0 23.0 1.88 4.5 

85/71 26.1 19.8 31.1 1.79 14.6 80 28.3 21.3 2.00 4.2 

75/63 23.6 18.8 28.2 1.68 14.1 60 32.5 26.8 1.81 5.3 

80/67 25.5 19.6 30.2 1.69 15.1 70 70 31.3 25.1 1.94 4.7 

85/71 27.5 20.2 32.3 1.69 16.3 80 30.4 23.2 2.07 4.3 

75/63 24.1 19.0 28.5 1.64 14.7 60 33.8 28.0 1.84 5.4 

80/67 26.0 19.7 30.7 1.65 15.8 70 32.5 26.2 1.97 4.8 

85/71 28.1 20.5 32.8 1.65 17.1 80 31.5 24.1 2.10 4.4 

75/63 21.8 18.1 26.5 1.81 12.1 

60 33.6 27.9 1.84 5.4 

80/67 23.4 18.8 28.3 1.84 12.7 70 32.6 26.3 1.97 4.8 

85/71 25.1 19.6 30.2 1.86 13.5 80 31.5 24.7 2.11 4.4 

75/63 22.7 18.5 27.3 1.74 13.0 60 36.5 30.6 1.89 5.7 

80/67 24.5 19.3 29.3 1.76 14.0 80 70 35.2 28.8 2.04 5.1 

85/71 26.5 19.9 31.4 1.77 15.0 80 34.2 26.6 2.18 4.6 

75/63 23.1 18.7 27.7 1.71 13.5 60 37.9 32.0 1.91 5.8 

80/67 25.1 19.4 29.8 1.72 14.6 70 36.5 30.0 2.06 5.2 

85/71 27.0 20.2 31.9 1.72 15.7 80 35.4 27.6 2.21 4.7 

75/63 20.1 17.5 24.9 1.92 10.5 

80/67 21.7 18.1 26.7 1.96 11.1 

85/71 23.3 18.9 28.5 1.99 11.7 


75/63 21.0 17.8 25.7 1.86 11.3 

80/67 22.7 18.5 27.6 1.89 12.0 

85/71 24.4 19.4 29.6 1.91 12.8 

75/63 21.3 17.8 26.0 1.84 11.6 

80/67 23.1 18.7 28.0 1.86 12.4 

85/71 24.9 19.3 30.1 1.88 13.3 

75/63 18.4 16.7 23.3 2.02 9.1 

80/67 19.9 17.4 25.1 2.07 9.6 

85/71 21.4 18.1 26.9 2.12 10.1 

75/63 19.1 17.0 24.0 1.98 9.7 

80/67 20.8 17.7 25.9 2.02 10.3 

85/71 22.3 18.6 27.7 2.05 10.9 

75/63 19.4 17.0 24.3 1.96 9.9 

80/67 21.1 17.8 26.2 2.00 10.6 

85/71 22.8 18.6 28.1 2.03 11.2 

Power 

Input 

(kW) 

COP 



heating. 













6720220353 


Capacity Data 

EC Series 27 

EC030 (950 CFM) 

Entering 

Fluid 

Temp (F) 

50 

60 

70 

80 

85 

90 

100 

110 

Water 

Flow 

(GPM) 

Pressure 

Drop 

(FOH) 

3.5 4.2 

6 11 

9 22.9 

3.5 4 

6 10.7 

9 22.1 

3.5 3.9 

6 10.3 

9 21.4 

3.5 3.8 

6 10 

9 20.7 

3.5 3.7 

6 9.8 

9 20.4 

3.5 3.7 

6 9.7 

9 20.1 

3.5 3.6 

6 9.4 

9 19.5 

3.5 3.5 

6 9.1 

9 18.9 

Entering Air 

Temp 

(db/wb) F 

COOLING 

Total 

Capacity 

(MBTUH) 

Sensible 

Capacity 

(MBTUH) 

Heat of 

Rejection 

(MBTUH) 

Power 

Input 

(kW) 

EER 

Entering 

Fluid Temp 

(F) 

Entering 

Air 

Temp 

(F) 

HEATING 

Total 

Capacity 

(MBTUH) 

Heat of 

Absorption 

(MBTUH) 

75/63 33.0 24.0 38.0 1.62 20.3 

60 19.2 13.9 1.65 3.4 

80/67 35.5 24.8 40.6 1.62 21.8 70 18.4 12.7 1.72 3.1 

85/71 37.9 25.5 43.1 1.62 23.4 80 17.5 11.5 1.78 2.9 

75/63 34.6 24.7 39.4 1.49 23.2 60 20.5 15.0 1.70 3.5 

80/67 37.3 25.6 42.1 1.47 25.3 30 70 19.5 13.8 1.77 3.2 

85/71 40.0 26.3 44.9 1.45 27.6 80 18.5 12.5 1.84 3.0 

75/63 35.4 25.1 40.1 1.43 24.8 60 21.3 15.7 1.73 3.6 

80/67 38.2 26.0 42.9 1.40 27.3 70 20.2 14.4 1.80 3.3 

85/71 41.0 26.7 45.7 1.36 30.1 80 19.1 13.0 1.86 3.0 

75/63 31.3 23.2 36.5 1.77 17.7 

60 22.6 16.9 1.78 3.7 

80/67 33.6 24.0 39.0 1.77 18.9 70 21.7 15.7 1.87 3.4 

85/71 36.0 24.7 41.5 1.78 20.3 80 20.8 14.4 1.95 3.1 

75/63 32.8 23.9 37.9 1.64 20.0 60 24.3 18.4 1.84 3.9 

80/67 35.4 24.8 40.5 1.63 21.7 40 70 23.2 17.0 1.93 3.5 

85/71 38.0 25.4 43.2 1.61 23.5 80 22.1 15.6 2.01 3.2 

75/63 33.6 24.2 38.5 1.58 21.3 60 25.2 19.2 1.87 3.9 

80/67 36.2 25.1 41.2 1.56 23.2 70 24.0 17.7 1.96 3.6 

85/71 39.0 25.9 44.0 1.53 25.5 80 22.8 16.2 2.04 3.3 

75/63 29.5 22.4 35.0 1.91 15.5 

60 26.6 20.0 1.91 4.1 

80/67 31.7 23.2 37.3 1.93 16.5 70 25.7 18.6 2.02 3.7 

85/71 33.9 24.0 39.7 1.94 17.5 80 24.3 17.5 2.11 3.4 

75/63 31.0 23.0 36.2 1.79 17.3 60 28.4 22.1 1.97 4.2 

80/67 33.4 23.9 38.8 1.79 18.6 50 70 27.7 20.2 2.09 3.9 

85/71 35.9 24.7 41.4 1.79 20.1 80 25.9 18.9 2.19 3.5 

75/63 31.7 23.4 36.9 1.74 18.3 60 29.6 23.1 2.01 4.3 

80/67 34.2 24.2 39.5 1.73 19.8 70 28.3 21.0 2.12 3.9 

85/71 36.8 25.1 42.2 1.71 21.5 80 27.4 19.3 2.23 3.6 

75/63 27.6 21.5 33.3 2.05 13.5 

60 30.8 23.7 2.03 4.5 

80/67 29.7 22.3 35.6 2.08 14.3 70 29.3 22.0 2.15 4.0 

85/71 31.9 23.0 38.0 2.10 15.2 80 28.1 20.7 2.27 3.6 

75/63 29.0 22.1 34.5 1.95 14.9 60 32.8 25.9 2.10 4.6 

80/67 31.3 23.0 37.0 1.96 16.0 60 70 31.6 24.2 2.22 4.2 

85/71 33.7 23.7 39.5 1.96 17.2 80 30.2 22.1 2.35 3.8 

75/63 29.7 22.4 35.1 1.89 15.7 60 34.2 27.2 2.13 4.7 

80/67 32.1 23.3 37.7 1.90 16.9 70 32.8 25.2 2.26 4.3 

85/71 34.6 24.1 40.3 1.89 18.3 80 31.3 22.9 2.38 3.8 

75/63 26.6 21.1 32.4 2.12 12.6 

60 34.8 27.4 2.14 4.8 

80/67 28.6 21.9 34.7 2.15 13.3 70 33.3 25.7 2.28 4.3 

85/71 30.7 22.8 37.0 2.18 14.1 80 32.1 23.7 2.41 3.9 

75/63 28.0 21.7 33.6 2.02 13.8 60 37.3 30.0 2.21 4.9 

80/67 30.2 22.6 36.0 2.04 14.8 70 70 36.0 28.2 2.36 4.5 

85/71 32.5 23.4 38.5 2.05 15.9 80 34.5 26.1 2.49 4.1 

75/63 28.7 22.0 34.2 1.97 14.5 60 38.9 31.4 2.25 5.1 

80/67 31.0 22.8 36.8 1.98 15.7 70 37.4 29.3 2.40 4.6 

85/71 33.4 23.8 39.3 1.98 16.9 80 35.8 27.3 2.54 4.1 

75/63 25.6 20.7 31.5 2.18 11.7 

60 39.0 31.2 2.24 5.1 

80/67 27.6 21.5 33.8 2.22 12.4 70 37.3 29.3 2.40 4.6 

85/71 29.6 22.2 36.0 2.26 13.1 80 36.1 27.5 2.55 4.2 

75/63 26.9 21.3 32.7 2.09 12.8 60 41.9 34.3 2.31 5.3 

80/67 29.1 22.1 35.1 2.12 13.7 80 70 40.4 32.2 2.48 4.8 

85/71 31.4 22.9 37.5 2.13 14.7 80 38.9 29.9 2.64 4.3 

75/63 27.6 21.6 33.3 2.05 13.5 60 43.7 36.0 2.34 5.5 

80/67 29.8 22.5 35.7 2.06 14.4 70 42.0 33.7 2.52 4.9 

85/71 32.2 23.2 38.3 2.07 15.6 80 40.3 31.2 2.68 4.4 

75/63 23.5 19.8 29.6 2.31 10.1 

80/67 25.4 20.6 31.8 2.37 10.7 

85/71 27.3 21.6 34.0 2.41 11.3 


75/63 24.7 20.4 30.7 2.24 11.0 

80/67 26.8 21.2 33.1 2.27 11.8 

85/71 29.0 22.0 35.5 2.30 12.6 

75/63 25.3 20.7 31.3 2.20 11.5 

80/67 27.5 21.6 33.7 2.23 12.3 

85/71 29.7 22.4 36.1 2.25 13.2 

75/63 21.4 18.8 27.7 2.44 8.8 

80/67 23.2 19.8 29.8 2.50 9.3 

85/71 25.0 20.7 31.9 2.56 9.8 

75/63 22.5 19.3 28.7 2.38 9.5 

80/67 24.5 20.2 31.0 2.42 10.1 

85/71 26.4 21.2 33.2 2.46 10.7 

75/63 23.1 19.7 29.2 2.34 9.9 

80/67 25.1 20.5 31.6 2.38 10.5 

85/71 27.2 21.5 33.9 2.42 11.2 

Power 

Input 

(kW) 

COP 



heating. 













Revised 10-12 


6720220353

28 

EC Series 

Capacity Data 

EC036 (1200 CFM) 

Entering 

Fluid 

Temp (F) 

50 

60 

70 

80 

85 

90 

100 

110 

Water 

Flow 

(GPM) 

Pressure 

Drop 

(FOH) 

4 2.3 

7.5 7 

11 13.9 

4 2.2 

7.5 6.8 

11 13.5 

4 2.1 

7.5 6.5 

11 13 

4 2 

7.5 6.3 

11 12.6 

4 2 

7.5 6.2 

11 12.4 

4 2 

7.5 6.1 

11 12.2 

4 1.9 

7.5 6 

11 11.9 

4 1.9 

7.5 5.8 

11 11.5 

Entering Air 

Temp 

(db/wb) F 

COOLING 

Total 

Capacity 

(MBTUH) 

Sensible 

Capacity 

(MBTUH) 

Heat of 

Rejection 

(MBTUH) 

Power 

Input 

(kW) 

EER 

Entering 

Fluid Temp 

(F) 

Entering 

Air 

Temp 

(F) 

HEATING 

Total 

Capacity 

(MBTUH) 

Heat of 

Absorption 

(MBTUH) 

75/63 41.3 30.2 47.8 2.08 19.9 

60 25.0 17.9 2.10 3.5 

80/67 44.3 31.2 50.9 2.07 21.4 70 23.8 16.3 2.19 3.2 

85/71 47.4 32.7 54.1 2.06 23.0 80 22.6 14.6 2.28 2.9 

75/63 43.4 31.2 49.6 1.91 22.7 60 26.9 19.5 2.16 3.7 

80/67 46.6 32.8 52.9 1.88 24.8 30 70 25.5 17.8 2.26 3.3 

85/71 50.1 33.7 56.4 1.84 27.2 80 24.1 16.0 2.35 3.0 

75/63 44.2 31.5 50.2 1.85 23.9 60 27.6 20.3 2.19 3.7 

80/67 47.5 33.2 53.7 1.81 26.2 70 26.2 18.4 2.29 3.4 

85/71 51.1 34.1 57.2 1.76 28.9 80 24.8 16.5 2.38 3.1 

75/63 39.1 29.2 45.9 2.26 17.3 

60 29.6 21.7 2.24 3.9 

80/67 42.0 30.2 48.9 2.26 18.6 70 28.1 20.0 2.36 3.5 

85/71 44.9 31.2 52.0 2.26 19.9 80 26.9 18.3 2.47 3.2 

75/63 41.1 30.1 47.6 2.09 19.6 60 32.0 23.8 2.32 4.1 

80/67 44.3 31.0 50.9 2.07 21.3 40 70 30.6 21.8 2.45 3.7 

85/71 47.5 32.8 54.2 2.04 23.3 80 28.8 20.0 2.56 3.3 

75/63 41.8 30.4 48.2 2.03 20.6 60 32.6 24.9 2.35 4.1 

80/67 45.1 31.4 51.6 2.00 22.5 70 31.1 22.9 2.48 3.7 

85/71 48.5 33.2 55.0 1.96 24.7 80 29.6 20.8 2.59 3.3 

75/63 36.9 28.1 44.0 2.45 15.0 

60 33.8 25.9 2.39 4.2 

80/67 39.6 29.2 46.9 2.46 16.1 70 32.6 24.1 2.53 3.8 

85/71 42.4 30.1 49.9 2.46 17.2 80 31.4 22.2 2.67 3.5 

75/63 38.7 29.0 45.6 2.29 16.9 60 36.8 28.7 2.46 4.4 

80/67 41.8 30.1 48.8 2.28 18.3 50 70 35.4 26.5 2.62 4.0 

85/71 44.9 31.1 52.0 2.26 19.9 80 33.8 24.4 2.76 3.6 

75/63 39.4 29.3 46.2 2.23 17.6 60 38.6 29.6 2.49 4.5 

80/67 42.6 30.5 49.4 2.21 19.2 70 36.6 27.6 2.65 4.0 

85/71 45.8 32.1 52.7 2.18 21.0 80 34.8 25.4 2.80 3.6 

75/63 34.5 27.0 42.0 2.64 13.0 

60 38.7 30.5 2.51 4.5 

80/67 37.2 28.1 44.9 2.66 13.9 70 37.5 28.5 2.68 4.1 

85/71 39.8 29.2 47.7 2.68 14.9 80 36.1 26.4 2.84 3.7 

75/63 36.3 27.8 43.5 2.50 14.5 60 42.8 33.6 2.59 4.8 

80/67 39.2 28.9 46.6 2.50 15.7 60 70 40.8 31.6 2.77 4.3 

85/71 42.2 29.9 49.8 2.49 17.0 80 39.2 29.3 2.94 3.9 

75/63 36.9 28.1 44.1 2.44 15.1 60 44.4 35.0 2.62 5.0 

80/67 39.9 29.3 47.2 2.43 16.4 70 42.7 32.6 2.80 4.5 

85/71 43.1 30.3 50.5 2.41 17.8 80 40.3 30.7 2.98 4.0 

75/63 33.3 26.6 41.0 2.74 12.2 

60 43.6 35.3 2.62 4.9 

80/67 35.9 27.6 43.8 2.77 13.0 70 42.4 33.2 2.81 4.4 

85/71 38.6 28.6 46.7 2.78 13.8 80 41.0 30.9 2.99 4.0 

75/63 35.1 27.2 42.5 2.60 13.5 60 48.5 39.0 2.70 5.3 

80/67 37.8 28.5 45.4 2.61 14.5 70 70 46.8 36.5 2.90 4.7 

85/71 40.8 29.4 48.6 2.60 15.7 80 44.6 34.3 3.09 4.2 

75/63 35.7 27.5 43.0 2.55 14.0 60 50.3 40.6 2.73 5.4 

80/67 38.6 28.6 46.1 2.55 15.1 70 48.4 37.9 2.93 4.8 

85/71 41.6 29.9 49.2 2.53 16.4 80 46.6 35.2 3.13 4.4 

75/63 32.1 26.0 39.9 2.83 11.3 

60 48.8 40.3 2.71 5.3 

80/67 34.6 27.2 42.7 2.87 12.1 70 47.3 38.0 2.92 4.7 

85/71 37.2 28.2 45.5 2.89 12.9 80 46.0 35.4 3.13 4.3 

75/63 33.7 26.8 41.3 2.70 12.5 60 54.2 44.5 2.78 5.7 

80/67 36.5 27.8 44.4 2.72 13.4 80 70 52.4 41.7 3.00 5.1 

85/71 39.4 29.0 47.3 2.72 14.5 80 50.5 39.0 3.22 4.6 

75/63 34.3 27.1 41.8 2.66 12.9 60 56.2 46.4 2.80 5.9 

80/67 37.2 28.1 44.9 2.66 14.0 70 54.2 43.4 3.03 5.2 

85/71 40.1 29.3 48.0 2.65 15.1 80 52.2 40.4 3.26 4.7 

75/63 29.8 24.9 37.9 3.01 9.9 

80/67 32.1 26.0 40.6 3.06 10.5 

85/71 34.5 27.2 43.2 3.10 11.1 


75/63 31.2 25.6 39.1 2.90 10.7 

80/67 33.7 26.8 41.9 2.93 11.5 

85/71 36.5 27.7 44.9 2.95 12.4 

75/63 31.7 25.8 39.6 2.86 11.1 

80/67 34.4 26.9 42.5 2.89 11.9 

85/71 37.2 28.0 45.5 2.89 12.8 

75/63 27.3 23.9 35.7 3.18 8.6 

80/67 29.5 25.0 38.3 3.24 9.1 

85/71 31.8 26.2 40.9 3.30 9.6 

75/63 28.5 24.5 36.8 3.09 9.2 

80/67 31.0 25.7 39.6 3.14 9.9 

85/71 33.5 26.8 42.4 3.17 10.6 

75/63 29.0 24.6 37.2 3.06 9.5 

80/67 31.5 25.9 40.0 3.10 10.2 

85/71 34.1 26.9 42.9 3.13 10.9 

Power 

Input 

(kW) 

COP 



heating. 













6720220353 


Capacity Data 

EC Series 29 

EC041 (1150 CFM) 

Entering 

Fluid 

Temp (F) 

50 

60 

70 

80 

85 

90 

100 

110 

Water 

Flow 

(GPM) 

Pressure 

Drop 

(FOH) 

5 3.4 

9 9.7 

13 18.8 

5 3.3 

9 9.4 

13 18.2 

5 3.2 

9 9.1 

13 17.6 

5 3.1 

9 8.8 

13 17 

5 3 

9 8.7 

13 16.8 

5 3 

9 8.5 

13 16.5 

5 2.9 

9 8.3 

13 16 

5 2.8 

9 8 

13 15.6 

Entering Air 

Temp 

(db/wb) F 

COOLING 

Total 

Capacity 

(MBTUH) 

Sensible 

Capacity 

(MBTUH) 

Heat of 

Rejection 

(MBTUH) 

Power 

Input 

(kW) 

EER 

Entering 

Fluid Temp 

(F) 

Entering 

Air 

Temp 

(F) 

HEATING 

Total 

Capacity 

(MBTUH) 

Heat of 

Absorption 

(MBTUH) 

75/63 46.5 32.0 54.2 2.43 19.1 

60 29.1 20.2 2.57 3.3 

80/67 49.9 33.0 57.8 2.44 20.5 70 27.7 18.5 2.67 3.0 

85/71 53.5 34.4 61.5 2.43 22.1 80 26.3 16.8 2.77 2.8 

75/63 48.3 32.9 55.7 2.27 21.3 60 31.2 21.6 2.65 3.5 

80/67 52.0 33.9 59.5 2.25 23.1 30 70 29.3 20.0 2.76 3.1 

85/71 55.9 35.3 63.4 2.23 25.2 80 27.8 18.0 2.85 2.9 

75/63 49.0 33.2 56.3 2.21 22.2 60 32.1 22.3 2.68 3.5 

80/67 52.8 34.2 60.1 2.19 24.1 70 30.4 20.3 2.80 3.2 

85/71 56.8 35.7 64.2 2.15 26.5 80 28.5 18.6 2.89 2.9 

75/63 44.1 30.9 52.3 2.64 16.7 

60 34.4 24.4 2.78 3.6 

80/67 47.5 31.9 55.8 2.65 17.9 70 32.6 22.7 2.90 3.3 

85/71 50.9 32.8 59.4 2.66 19.2 80 31.2 20.8 3.03 3.0 

75/63 45.9 31.7 53.7 2.48 18.4 60 36.9 26.4 2.87 3.8 

80/67 49.5 32.8 57.4 2.48 20.0 40 70 35.3 24.3 3.00 3.5 

85/71 53.2 33.7 61.2 2.46 21.7 80 33.1 22.8 3.13 3.1 

75/63 46.5 32.0 54.2 2.43 19.2 60 37.3 27.7 2.91 3.8 

80/67 50.2 33.1 58.0 2.41 20.8 70 36.3 25.1 3.04 3.5 

85/71 54.0 34.6 61.9 2.38 22.8 80 34.0 23.6 3.17 3.1 

75/63 41.7 29.8 50.2 2.86 14.5 

60 39.9 29.1 2.98 3.9 

80/67 44.9 30.8 53.7 2.88 15.6 70 38.4 27.0 3.13 3.6 

85/71 48.2 31.7 57.2 2.90 16.6 80 36.8 25.1 3.28 3.3 

75/63 43.4 30.5 51.6 2.71 16.0 60 43.0 31.7 3.09 4.1 

80/67 46.8 31.6 55.2 2.71 17.3 50 70 41.3 29.4 3.25 3.7 

85/71 50.4 32.6 58.9 2.70 18.7 80 39.6 27.1 3.40 3.4 

75/63 43.9 30.8 52.1 2.66 16.5 60 44.4 32.8 3.14 4.1 

80/67 47.5 31.9 55.8 2.65 17.9 70 42.5 30.3 3.30 3.8 

85/71 51.2 32.9 59.6 2.63 19.5 80 40.1 28.5 3.45 3.4 

75/63 39.2 28.6 48.1 3.08 12.7 

60 45.6 34.2 3.19 4.2 

80/67 42.3 29.6 51.5 3.11 13.5 70 44.1 31.9 3.37 3.8 

85/71 45.4 30.6 54.9 3.14 14.4 80 42.5 29.7 3.54 3.5 

75/63 40.7 29.3 49.4 2.94 13.8 60 49.3 37.2 3.31 4.4 

80/67 44.0 30.4 53.0 2.96 14.9 60 70 47.5 34.7 3.50 4.0 

85/71 47.5 31.2 56.7 2.96 16.0 80 44.9 32.8 3.67 3.6 

75/63 41.2 29.6 49.8 2.90 14.2 60 50.9 38.5 3.36 4.4 

80/67 44.6 30.8 53.4 2.90 15.4 70 49.0 35.8 3.55 4.0 

85/71 48.2 31.8 57.1 2.89 16.7 80 47.0 33.0 3.73 3.7 

75/63 37.9 28.0 47.1 3.19 11.9 

60 51.5 39.4 3.38 4.5 

80/67 40.9 29.1 50.4 3.23 12.6 70 49.8 36.9 3.59 4.1 

85/71 44.0 30.0 53.8 3.26 13.4 80 47.7 34.8 3.79 3.7 

75/63 39.4 28.7 48.3 3.06 12.8 60 55.8 43.0 3.51 4.7 

80/67 42.7 29.6 51.9 3.09 13.8 70 70 53.4 40.6 3.73 4.2 

85/71 46.0 30.7 55.4 3.09 14.9 80 51.8 37.2 3.93 3.9 

75/63 39.8 28.6 48.7 3.03 13.1 60 57.6 44.5 3.57 4.7 

80/67 43.2 30.1 52.2 3.03 14.2 70 55.5 41.5 3.79 4.3 

85/71 46.7 31.2 55.9 3.03 15.4 80 53.3 38.5 3.99 3.9 

75/63 36.6 27.4 45.9 3.30 11.2 

60 57.4 44.8 3.56 4.7 

80/67 39.5 28.4 49.3 3.35 11.8 70 55.6 42.0 3.79 4.3 

85/71 42.6 29.3 52.6 3.39 12.6 80 53.2 39.8 4.02 3.9 

75/63 38.0 27.8 47.2 3.19 11.9 60 62.3 49.0 3.69 4.9 

80/67 41.1 29.1 50.6 3.21 12.8 80 70 60.1 45.8 3.94 4.5 

85/71 44.5 30.1 54.1 3.23 13.7 80 57.7 42.8 4.17 4.1 

75/63 38.4 28.0 47.6 3.15 12.2 60 64.3 50.7 3.74 5.0 

80/67 41.7 29.4 51.0 3.16 13.2 70 62.0 47.3 3.99 4.6 

85/71 45.1 30.5 54.6 3.17 14.2 80 59.6 44.0 4.23 4.1 

75/63 34.0 26.1 43.8 3.50 9.8 

80/67 36.7 27.1 46.9 3.57 10.3 

85/71 39.5 28.3 50.0 3.63 11.0 


75/63 35.1 26.7 44.7 3.41 10.4 

80/67 38.1 27.8 48.1 3.46 11.1 

85/71 41.3 28.7 51.6 3.50 11.9 

75/63 35.6 26.8 45.1 3.38 10.6 

80/67 38.6 28.0 48.5 3.42 11.3 

85/71 41.8 29.0 52.0 3.45 12.1 

75/63 31.2 24.8 41.4 3.71 8.5 

80/67 33.8 25.9 44.5 3.79 9.0 

85/71 36.5 26.9 47.6 3.87 9.6 

75/63 32.2 25.3 42.3 3.63 9.0 

80/67 35.0 26.5 45.4 3.70 9.5 

85/71 38.0 27.3 48.8 3.76 10.2 

75/63 32.8 25.7 42.7 3.59 9.2 

80/67 35.6 26.8 45.9 3.66 9.9 

85/71 38.5 27.6 49.3 3.72 10.5 

Power 

Input 

(kW) 

COP 



heating. 













Revised 10-12 


6720220353

30 

EC Series 

Capacity Data 

EC042 (1500 CFM) 

Entering 

Fluid 

Temp (F) 

50 

60 

70 

80 

85 

90 

100 

110 

Water 

Flow 

(GPM) 

Pressure 

Drop 

(FOH) 

5 3.4 

10 11.7 

13 18.8 

5 3.3 

10 11.4 

13 18.2 

5 3.2 

10 11 

13 17.6 

5 3.1 

10 10.6 

13 17 

5 3 

10 10.5 

13 16.8 

5 3 

10 10.3 

13 16.5 

5 2.9 

10 10 

13 16 

5 2.8 

10 9.7 

13 15.6 

Entering Air 

Temp 

(db/wb) F 

COOLING 

Total 

Capacity 

(MBTUH) 

Sensible 

Capacity 

(MBTUH) 

Heat of 

Rejection 

(MBTUH) 

Power 

Input 

(kW) 

EER 

Entering 

Fluid Temp 

(F) 

Entering 

Air 

Temp 

(F) 

HEATING 

Total 

Capacity 

(MBTUH) 

Heat of 

Absorption 

(MBTUH) 

75/63 48.1 35.7 56.2 2.53 19.1 

60 23.0 20.7 2.52 2.7 

80/67 51.6 36.9 59.8 2.51 20.5 70 23.0 18.7 2.60 2.6 

85/71 55.2 38.2 63.5 2.49 22.2 80 25.4 16.2 2.66 2.8 

75/63 50.1 36.8 57.9 2.36 21.3 60 29.3 22.5 2.55 3.4 

80/67 54.0 38.1 61.8 2.31 23.3 30 70 24.0 20.6 2.68 2.6 

85/71 57.9 38.6 65.8 2.29 25.3 80 24.4 18.2 2.74 2.6 

75/63 50.8 37.0 58.5 2.30 22.1 60 31.3 22.9 2.56 3.6 

80/67 54.7 38.3 62.4 2.26 24.2 70 27.3 20.8 2.68 3.0 

85/71 58.6 39.5 66.3 2.21 26.5 80 24.5 18.6 2.77 2.6 

75/63 45.4 34.6 54.0 2.75 16.5 

60 33.7 25.2 2.64 3.7 

80/67 48.8 35.8 57.5 2.74 17.8 70 32.6 23.1 2.76 3.5 

85/71 52.3 37.0 61.1 2.73 19.1 80 31.1 20.9 2.88 3.2 

75/63 47.4 35.6 55.6 2.57 18.4 60 36.8 27.8 2.72 4.0 

80/67 51.1 36.9 59.4 2.55 20.0 40 70 35.1 25.4 2.85 3.6 

85/71 54.9 37.8 63.3 2.52 21.8 80 33.0 23.1 2.97 3.3 

75/63 48.2 35.9 56.3 2.51 19.2 60 37.6 28.4 2.74 4.0 

80/67 51.9 37.2 60.0 2.49 20.9 70 35.8 26.0 2.87 3.6 

85/71 55.7 38.4 63.9 2.45 22.8 80 34.1 23.4 2.99 3.3 

75/63 42.6 33.5 51.6 2.98 14.3 

60 40.2 30.1 2.79 4.2 

80/67 45.9 34.8 55.1 2.98 15.4 70 37.8 28.1 2.95 3.8 

85/71 49.3 35.9 58.6 2.98 16.5 80 36.7 25.7 3.09 3.5 

75/63 44.8 34.3 53.4 2.80 16.0 60 43.4 33.7 2.88 4.4 

80/67 48.2 35.7 57.0 2.79 17.3 50 70 41.5 31.1 3.05 4.0 

85/71 51.8 36.9 60.7 2.77 18.7 80 39.7 28.2 3.20 3.6 

75/63 45.4 34.6 54.0 2.75 16.5 60 44.3 34.6 2.90 4.5 

80/67 49.0 35.9 57.7 2.73 18.0 70 42.4 31.9 3.07 4.0 

85/71 52.7 37.1 61.4 2.70 19.5 80 40.0 29.2 3.23 3.6 

75/63 39.8 32.3 49.3 3.21 12.4 

60 45.8 35.9 2.93 4.6 

80/67 43.0 33.5 52.7 3.23 13.3 70 44.2 33.6 3.12 4.2 

85/71 46.1 35.0 56.0 3.24 14.2 80 42.1 31.1 3.30 3.7 

75/63 41.9 33.1 51.0 3.04 13.8 60 50.1 40.0 3.03 4.8 

80/67 45.2 34.5 54.6 3.04 14.9 60 70 48.2 37.3 3.22 4.4 

85/71 48.7 35.7 58.1 3.04 16.0 80 46.1 34.4 3.41 4.0 

75/63 42.5 33.4 51.6 2.99 14.2 60 51.2 41.1 3.05 4.9 

80/67 46.0 34.8 55.2 2.98 15.4 70 49.2 38.3 3.24 4.4 

85/71 49.5 36.0 58.8 2.97 16.7 80 47.0 35.3 3.43 4.0 

75/63 38.4 31.5 48.1 3.33 11.5 

60 51.9 41.7 3.06 5.0 

80/67 41.5 32.9 51.4 3.36 12.4 70 50.3 39.2 3.27 4.5 

85/71 44.5 34.5 54.7 3.37 13.2 80 48.5 36.6 3.47 4.1 

75/63 40.5 32.6 49.8 3.16 12.8 60 57.0 46.6 3.16 5.3 

80/67 43.7 33.9 53.3 3.17 13.8 70 70 54.9 43.6 3.38 4.8 

85/71 47.1 35.1 56.8 3.17 14.9 80 52.8 40.6 3.59 4.3 

75/63 41.1 32.8 50.3 3.11 13.2 60 58.4 47.9 3.18 5.4 

80/67 44.4 34.1 53.9 3.11 14.3 70 56.2 44.8 3.40 4.8 

85/71 47.9 35.4 57.5 3.10 15.4 80 53.9 41.6 3.62 4.4 

75/63 36.9 31.3 46.8 3.44 10.7 

60 58.2 47.7 3.18 5.4 

80/67 39.9 32.3 50.1 3.48 11.5 70 56.4 45.0 3.41 4.9 

85/71 43.0 33.6 53.4 3.51 12.3 80 54.5 42.2 3.63 4.4 

75/63 39.0 32.1 48.6 3.27 11.9 60 64.1 53.4 3.26 5.8 

80/67 42.2 33.3 52.0 3.29 12.8 80 70 61.8 50.1 3.51 5.2 

85/71 45.4 34.5 55.5 3.30 13.8 80 59.4 46.8 3.75 4.6 

75/63 39.6 32.3 49.1 3.23 12.3 60 65.6 54.9 3.28 5.9 

80/67 42.9 33.5 52.6 3.24 13.3 70 63.2 51.4 3.53 5.2 

85/71 46.1 35.0 56.0 3.24 14.2 80 60.7 47.9 3.78 4.7 

75/63 33.9 29.9 44.3 3.67 9.3 

80/67 36.7 31.5 47.4 3.72 9.9 

85/71 39.7 32.3 50.7 3.77 10.5 


75/63 36.1 30.6 46.2 3.51 10.3 

80/67 39.0 32.2 49.4 3.54 11.0 

85/71 42.1 33.6 52.7 3.57 11.8 

75/63 36.7 30.9 46.6 3.47 10.6 

80/67 39.7 32.4 49.9 3.49 11.4 

85/71 42.8 33.8 53.3 3.51 12.2 

75/63 31.2 28.7 41.9 3.86 8.1 

80/67 33.5 30.0 44.7 3.95 8.5 

85/71 36.1 31.6 47.6 4.01 9.0 

75/63 33.3 29.6 43.7 3.71 9.0 

80/67 36.0 30.8 46.9 3.78 9.5 

85/71 38.9 32.1 50.0 3.83 10.2 

75/63 33.8 29.8 44.2 3.68 9.2 

80/67 36.6 31.1 47.3 3.73 9.8 

85/71 39.5 32.3 50.6 3.78 10.5 

Power 

Input 

(kW) 

COP 



heating. 













6720220353 


Capacity Data 

EC Series 31 

EC048 (1600 CFM) 

Entering 

Fluid 

Temp (F) 

50 

60 

70 

80 

85 

90 

100 

110 

Water 

Flow 

(GPM) 

Pressure 

Drop 

(FOH) 

6 3.1 

12 11 

16 18.4 

6 3 

12 10.6 

16 17.8 

6 2.9 

12 10.2 

16 17.2 

6 2.8 

12 9.9 

16 16.7 

6 2.8 

12 9.8 

16 16.4 

6 2.8 

12 9.6 

16 16.1 

6 2.7 

12 9.3 

16 15.7 

6 2.6 

12 9.1 

16 15.2 

Entering Air 

Temp 

(db/wb) F 

COOLING 

Total 

Capacity 

(MBTUH) 

Sensible 

Capacity 

(MBTUH) 

Heat of 

Rejection 

(MBTUH) 

Power 

Input 

(kW) 

EER 

Entering 

Fluid Temp 

(F) 

Entering 

Air 

Temp 

(F) 

HEATING 

Total 

Capacity 

(MBTUH) 

Heat of 

Absorption 

(MBTUH) 

75/63 52.1 38.8 60.8 2.71 19.2 

60 37.7 27.6 2.94 3.8 

80/67 55.6 40.9 64.4 2.72 20.4 70 37.0 25.1 3.20 3.4 

85/71 59.2 41.8 68.2 2.73 21.7 80 35.6 23.1 3.50 3.0 

75/63 54.6 39.9 62.6 2.41 22.7 60 39.9 29.6 2.98 3.9 

80/67 58.3 42.0 66.4 2.39 24.4 30 70 38.7 27.5 3.25 3.5 

85/71 62.3 43.0 70.5 2.37 26.3 80 37.7 25.1 3.57 3.1 

75/63 55.3 40.2 63.1 2.33 23.7 60 40.6 30.2 2.99 4.0 

80/67 59.1 42.3 67.0 2.30 25.7 70 39.4 28.1 3.26 3.5 

85/71 63.2 43.4 71.1 2.28 27.8 80 38.4 25.7 3.58 3.1 

75/63 50.0 37.8 59.4 2.99 16.7 

60 41.5 31.3 3.01 4.0 

80/67 53.2 39.1 62.8 3.00 17.7 70 41.3 29.1 3.29 3.7 

85/71 56.7 40.9 66.5 3.02 18.8 80 40.9 27.1 3.62 3.3 

75/63 52.4 38.8 61.0 2.69 19.5 60 44.6 34.1 3.06 4.3 

80/67 55.9 41.1 64.7 2.67 20.9 40 70 43.6 32.0 3.35 3.8 

85/71 59.8 42.1 68.6 2.66 22.5 80 42.7 30.0 3.67 3.4 

75/63 53.0 39.1 61.5 2.61 20.3 60 45.5 35.0 3.08 4.3 

80/67 56.6 41.3 65.2 2.59 21.9 70 44.5 32.9 3.37 3.9 

85/71 60.6 42.4 69.2 2.56 23.7 80 43.6 30.8 3.69 3.5 

75/63 47.7 37.0 57.8 3.29 14.5 

60 46.2 35.6 3.09 4.4 

80/67 50.9 38.2 61.2 3.31 15.4 70 46.1 33.6 3.39 4.0 

85/71 54.2 40.0 64.7 3.33 16.3 80 45.5 31.7 3.72 3.6 

75/63 50.0 38.0 59.4 2.98 16.8 60 50.7 39.1 3.15 4.7 

80/67 53.5 40.0 63.0 2.98 18.0 50 70 49.8 36.9 3.46 4.2 

85/71 57.0 41.2 66.6 2.97 19.2 80 48.3 35.1 3.80 3.7 

75/63 50.6 38.2 59.8 2.91 17.4 60 51.3 40.6 3.17 4.7 

80/67 54.2 40.2 63.5 2.89 18.8 70 50.9 37.9 3.48 4.3 

85/71 57.8 41.5 67.2 2.87 20.1 80 50.1 35.7 3.83 3.8 

75/63 45.4 36.0 56.3 3.62 12.6 

60 51.5 40.8 3.17 4.8 

80/67 48.5 37.0 59.6 3.64 13.3 70 50.8 38.9 3.49 4.3 

85/71 51.5 39.2 62.8 3.66 14.1 80 52.0 36.3 3.85 4.0 

75/63 47.7 36.7 57.8 3.31 14.4 60 56.9 45.0 3.24 5.1 

80/67 50.9 38.2 61.1 3.31 15.4 60 70 55.9 42.7 3.58 4.6 

85/71 54.3 40.2 64.7 3.30 16.5 80 55.0 40.3 3.94 4.1 

75/63 48.2 37.0 58.2 3.23 14.9 60 57.8 46.8 3.27 5.2 

80/67 51.5 38.4 61.6 3.22 16.0 70 56.6 44.3 3.60 4.6 

85/71 55.1 40.3 65.3 3.21 17.2 80 56.2 41.4 3.97 4.2 

75/63 44.3 35.5 55.6 3.79 11.7 

60 57.3 46.4 3.26 5.1 

80/67 47.1 36.7 58.7 3.82 12.3 70 56.5 44.2 3.60 4.6 

85/71 50.2 38.6 62.0 3.84 13.1 80 55.7 42.1 3.97 4.1 

75/63 46.4 36.4 56.9 3.48 13.3 60 63.5 51.4 3.34 5.6 

80/67 49.6 37.4 60.4 3.48 14.2 70 70 62.3 48.7 3.69 4.9 

85/71 53.0 39.6 63.8 3.48 15.2 80 61.1 46.1 4.07 4.4 

75/63 47.0 36.4 57.4 3.41 13.8 60 64.6 53.3 3.37 5.6 

80/67 50.2 37.7 60.8 3.40 14.8 70 63.1 50.5 3.72 5.0 

85/71 53.6 40.0 64.2 3.39 15.8 80 62.4 47.2 4.10 4.5 

75/63 43.2 34.8 55.0 3.98 10.9 

60 63.3 52.2 3.35 5.5 

80/67 46.0 35.9 58.0 4.01 11.5 70 62.3 49.9 3.71 4.9 

85/71 48.7 37.4 61.0 4.03 12.1 80 61.3 47.5 4.09 4.4 

75/63 45.1 35.9 56.1 3.67 12.3 60 70.3 57.9 3.44 6.0 

80/67 48.2 37.1 59.4 3.67 13.1 80 70 68.7 54.9 3.80 5.3 

85/71 51.4 39.2 62.8 3.67 14.0 80 67.2 51.8 4.19 4.7 

75/63 45.6 36.1 56.5 3.59 12.7 60 72.1 59.6 3.46 6.1 

80/67 48.8 37.3 59.8 3.58 13.6 70 70.3 56.4 3.83 5.4 

85/71 52.1 39.5 63.2 3.58 14.6 80 68.6 53.1 4.21 4.8 

75/63 40.7 34.0 53.5 4.38 9.3 

80/67 43.3 35.2 56.4 4.40 9.8 

85/71 46.0 37.3 59.3 4.43 10.4 


75/63 42.5 34.8 54.6 4.06 10.5 

80/67 45.5 36.0 57.7 4.07 11.2 

85/71 48.5 37.0 60.9 4.07 11.9 

75/63 43.0 35.0 54.9 3.98 10.8 

80/67 46.0 36.2 58.0 3.98 11.6 

85/71 49.1 37.5 61.3 3.98 12.4 

75/63 38.3 32.7 52.3 4.82 8.0 

80/67 40.7 33.9 55.0 4.85 8.4 

85/71 43.1 35.0 57.7 4.88 8.8 

75/63 40.0 33.5 53.2 4.50 8.9 

80/67 42.6 34.9 56.0 4.51 9.5 

85/71 45.4 36.2 58.9 4.51 10.1 

75/63 40.4 33.7 53.4 4.43 9.1 

80/67 43.2 35.1 56.3 4.42 9.8 

85/71 46.0 37.3 59.3 4.42 10.4 

Power 

Input 

(kW) 

COP 



heating. 













Revised 10-12 


6720220353

32 

EC Series 

Capacity Data 

EC060 (2000 CFM) 

Entering 

Fluid 

Temp (F) 

50 

60 

70 

80 

85 

90 

100 

110 

Water 

Flow 

(GPM) 

Pressure 

Drop 

(FOH) 

8 3.7 

13 8.9 

20 19.2 

8 3.6 

13 8.6 

20 18.6 

8 3.5 

13 8.3 

20 18 

8 3.3 

13 8 

20 17.4 

8 3.3 

13 7.9 

20 17.1 

8 3.2 

13 7.8 

20 16.9 

8 3.1 

13 7.5 

20 16.4 

8 3.1 

13 7.3 

20 15.9 

Entering Air 

Temp 

(db/wb) F 

COOLING 

Total 

Capacity 

(MBTUH) 

Sensible 

Capacity 

(MBTUH) 

Heat of 

Rejection 

(MBTUH) 

Power 

Input 

(kW) 

EER 

Entering 

Fluid Temp 

(F) 

Entering 

Air 

Temp 

(F) 

HEATING 

Total 

Capacity 

(MBTUH) 

Heat of 

Absorption 

(MBTUH) 

75/63 66.8 48.6 78.7 3.63 18.4 

60 48.3 33.5 4.30 3.3 

80/67 71.4 50.3 83.5 3.67 19.5 70 48.9 31.1 4.75 3.0 

85/71 76.3 51.6 88.6 3.70 20.6 80 49.1 29.0 5.26 2.7 

75/63 68.9 49.7 80.2 3.41 20.2 60 51.0 35.8 4.35 3.4 

80/67 73.8 51.2 85.4 3.44 21.5 30 70 49.9 33.6 4.80 3.0 

85/71 79.0 52.6 90.8 3.46 22.8 80 49.5 31.4 5.29 2.7 

75/63 70.1 50.3 81.2 3.29 21.3 60 52.7 37.4 4.39 3.5 

80/67 75.2 51.8 86.5 3.31 22.7 70 52.0 35.1 4.84 3.2 

85/71 80.6 53.2 92.1 3.33 24.2 80 50.7 32.6 5.32 2.8 

75/63 64.1 47.6 76.6 3.93 16.3 

60 55.2 40.0 4.44 3.6 

80/67 68.6 49.0 81.4 3.96 17.3 70 54.7 37.9 4.90 3.3 

85/71 73.4 50.3 86.4 4.00 18.4 80 55.3 35.1 5.39 3.0 

75/63 66.2 48.4 78.2 3.70 17.9 60 58.6 43.0 4.51 3.8 

80/67 70.9 50.0 83.2 3.72 19.0 40 70 57.8 40.6 4.96 3.4 

85/71 76.0 51.3 88.4 3.74 20.3 80 57.2 38.2 5.46 3.1 

75/63 67.3 49.0 79.0 3.57 18.8 60 60.8 44.9 4.55 3.9 

80/67 72.2 50.5 84.2 3.59 20.1 70 59.9 42.3 5.00 3.5 

85/71 77.5 51.9 89.6 3.60 21.5 80 59.0 39.8 5.50 3.1 

75/63 61.4 46.2 74.7 4.27 14.4 

60 62.7 47.1 4.59 4.0 

80/67 65.7 47.6 79.4 4.30 15.3 70 61.6 44.8 5.05 3.6 

85/71 70.2 49.1 84.1 4.33 16.2 80 62.6 41.8 5.56 3.3 

75/63 63.3 47.1 76.1 4.03 15.7 60 66.9 50.9 4.67 4.2 

80/67 67.9 48.6 80.9 4.05 16.8 50 70 65.3 48.2 5.13 3.7 

85/71 72.7 50.0 86.0 4.06 17.9 80 64.9 45.6 5.64 3.4 

75/63 64.4 47.6 76.8 3.90 16.5 60 69.6 53.2 4.73 4.3 

80/67 69.2 49.1 81.9 3.91 17.7 70 68.4 50.4 5.19 3.9 

85/71 74.2 50.6 87.0 3.91 19.0 80 66.7 47.7 5.69 3.4 

75/63 58.4 45.1 72.7 4.66 12.5 

60 71.9 54.2 4.75 4.4 

80/67 62.7 46.4 77.3 4.69 13.4 70 71.1 51.6 5.22 4.0 

85/71 67.0 47.9 81.9 4.72 14.2 80 68.8 49.7 5.74 3.5 

75/63 60.3 45.9 73.9 4.40 13.7 60 75.9 59.3 4.85 4.6 

80/67 64.8 47.3 78.7 4.42 14.7 60 70 74.6 56.3 5.32 4.1 

85/71 69.3 49.1 83.4 4.43 15.6 80 73.4 53.5 5.84 3.7 

75/63 61.4 46.1 74.7 4.27 14.4 60 79.2 62.1 4.91 4.7 

80/67 65.9 47.8 79.5 4.28 15.4 70 77.6 58.9 5.38 4.2 

85/71 70.7 49.6 84.4 4.27 16.5 80 76.2 55.6 5.90 3.8 

75/63 56.9 44.5 71.8 4.87 11.7 

60 79.1 63.0 4.92 4.7 

80/67 61.0 46.1 76.1 4.90 12.5 70 78.1 60.2 5.40 4.2 

85/71 65.2 47.6 80.6 4.92 13.2 80 77.1 57.4 5.93 3.8 

75/63 58.7 45.2 72.9 4.61 12.7 60 85.3 68.3 5.04 5.0 

80/67 63.1 46.8 77.5 4.62 13.6 70 70 83.8 64.9 5.52 4.5 

85/71 67.7 48.1 82.3 4.63 14.6 80 82.2 61.8 6.05 4.0 

75/63 59.7 45.7 73.6 4.48 13.3 60 89.2 71.5 5.11 5.1 

80/67 64.3 47.1 78.4 4.48 14.3 70 87.3 67.8 5.59 4.6 

85/71 69.0 48.6 83.2 4.48 15.4 80 85.6 64.1 6.12 4.1 

75/63 55.4 43.9 70.8 5.09 10.9 

60 87.9 71.5 5.10 5.1 

80/67 59.4 45.4 75.1 5.12 11.6 70 86.5 68.4 5.59 4.5 

85/71 63.5 46.9 79.5 5.15 12.3 80 85.4 65.2 6.13 4.1 

75/63 57.2 44.6 71.9 4.83 11.8 60 95.1 77.5 5.22 5.3 

80/67 61.4 46.2 76.4 4.84 12.7 80 70 93.3 73.8 5.72 4.8 

85/71 65.8 47.8 81.0 4.85 13.6 80 91.4 70.4 6.26 4.3 

75/63 58.1 45.0 72.5 4.70 12.4 60 99.6 81.2 5.30 5.5 

80/67 62.5 46.6 77.1 4.69 13.3 70 97.0 77.7 5.80 4.9 

85/71 67.1 48.2 81.9 4.69 14.3 80 94.9 73.6 6.34 4.4 

75/63 52.5 42.1 69.3 5.59 9.4 

80/67 56.3 44.5 73.3 5.61 10.0 

85/71 60.3 46.0 77.6 5.64 10.7 


75/63 54.2 43.4 70.2 5.32 10.2 

80/67 58.3 45.0 74.5 5.32 10.9 

85/71 62.5 46.6 79.0 5.33 11.7 

75/63 55.0 43.8 70.7 5.18 10.6 

80/67 59.1 45.0 75.0 5.18 11.4 

85/71 63.5 46.5 79.6 5.17 12.3 

75/63 49.2 41.4 67.5 6.14 8.0 

80/67 52.8 43.1 71.4 6.17 8.6 

85/71 56.5 45.0 75.3 6.19 9.1 

75/63 50.7 42.0 68.2 5.87 8.6 

80/67 54.5 44.0 72.2 5.87 9.3 

85/71 58.8 45.3 76.7 5.87 10.0 

75/63 51.4 42.4 68.6 5.75 8.9 

80/67 55.6 43.8 73.0 5.74 9.7 

85/71 59.8 45.8 77.3 5.71 10.5 

Power 

Input 

(kW) 

COP 



heating. 













6720220353 


Capacity Data 

EC Series 33 

EC070 (2200 CFM) 

Entering 

Fluid 

Temp (F) 

50 

60 

70 

80 

85 

90 

100 

110 

Water 

Flow 

(GPM) 

Pressure 

Drop 

(FOH) 

8 5.7 

12 14.2 

20 28.3 

8 5.5 

12 13.7 

20 27.3 

8 5.3 

12 13.3 

20 26.4 

8 5.1 

12 12.8 

20 25.6 

8 5 

12 12.6 

20 25.2 

8 5 

12 12.5 

20 24.8 

8 4.8 

12 12.1 

20 24.1 

8 4.7 

12 11.7 

20 23.4 

Entering Air 

Temp 

(db/wb) F 

COOLING 

Total 

Capacity 

(MBTUH) 

Sensible 

Capacity 

(MBTUH) 

Heat of 

Rejection 

(MBTUH) 

Power 

Input 

(kW) 

EER 

Entering 

Fluid Temp 

(F) 

Entering 

Air 

Temp 

(F) 

HEATING 

Total 

Capacity 

(MBTUH) 

Heat of 

Absorption 

(MBTUH) 

75/63 73.8 55.3 86.2 3.72 19.9 

60 52.7 35.8 4.25 3.6 

80/67 78.6 56.7 91.5 3.76 20.9 70 51.4 33.3 4.67 3.2 

85/71 83.5 58.0 97.0 3.79 22.0 80 50.6 30.4 5.14 2.9 

75/63 75.7 56.1 88.1 3.51 21.5 60 55.0 38.8 4.30 3.8 

80/67 80.8 57.7 93.7 3.53 22.9 30 70 53.8 35.7 4.71 3.4 

85/71 86.0 59.1 99.5 3.56 24.2 80 53.0 32.6 5.18 3.0 

75/63 77.0 56.7 89.4 3.38 22.8 60 56.5 40.3 4.32 3.8 

80/67 82.1 58.2 95.0 3.41 24.1 70 55.2 37.1 4.73 3.4 

85/71 87.3 59.5 100.8 3.44 25.4 80 53.9 33.9 5.19 3.0 

75/63 70.9 53.9 83.4 4.04 17.5 

60 59.3 43.0 4.36 4.0 

80/67 75.4 55.6 88.4 4.07 18.5 70 57.9 40.0 4.78 3.6 

85/71 80.2 56.9 93.8 4.11 19.5 80 57.2 37.0 5.24 3.2 

75/63 72.8 54.7 85.2 3.83 19.0 60 62.5 46.1 4.41 4.2 

80/67 77.4 56.4 90.4 3.86 20.0 40 70 61.1 43.0 4.83 3.7 

85/71 82.5 57.9 96.0 3.88 21.3 80 59.9 39.8 5.29 3.3 

75/63 74.0 55.3 86.4 3.70 20.0 60 64.3 48.1 4.44 4.2 

80/67 78.8 56.9 91.8 3.72 21.2 70 62.8 44.7 4.85 3.8 

85/71 83.9 58.4 97.4 3.75 22.4 80 61.5 41.4 5.32 3.4 

75/63 67.7 52.7 80.3 4.40 15.4 

60 67.2 50.1 4.47 4.4 

80/67 72.2 54.2 85.5 4.43 16.3 70 65.6 47.2 4.89 3.9 

85/71 76.9 55.6 90.6 4.46 17.2 80 64.9 42.6 5.36 3.6 

75/63 69.6 53.5 82.1 4.17 16.7 60 70.6 54.3 4.53 4.6 

80/67 74.3 55.0 87.4 4.20 17.7 50 70 69.0 50.9 4.95 4.1 

85/71 78.9 56.6 92.6 4.23 18.7 80 67.8 47.5 5.43 3.7 

75/63 70.8 54.0 83.3 4.04 17.5 60 72.8 56.6 4.56 4.7 

80/67 75.6 55.5 88.6 4.06 18.6 70 71.2 53.1 4.98 4.2 

85/71 80.5 57.0 94.1 4.08 19.7 80 69.7 49.5 5.46 3.7 

75/63 64.5 51.2 77.6 4.81 13.4 

60 75.5 51.6 4.56 4.9 

80/67 68.8 53.0 82.3 4.83 14.2 70 73.8 50.6 5.00 4.3 

85/71 73.2 54.5 87.3 4.86 15.1 80 71.9 49.9 5.49 3.8 

75/63 66.5 52.0 79.3 4.56 14.6 60 79.0 62.4 4.64 5.0 

80/67 70.8 53.8 84.2 4.58 15.5 60 70 77.4 59.3 5.08 4.5 

85/71 75.5 55.2 89.4 4.60 16.4 80 75.8 55.6 5.57 4.0 

75/63 67.6 52.5 80.3 4.42 15.3 60 81.9 65.8 4.68 5.1 

80/67 72.2 54.2 85.4 4.43 16.3 70 80.5 61.7 5.12 4.6 

85/71 77.0 55.7 90.7 4.45 17.3 80 78.1 57.9 5.60 4.1 

75/63 62.8 50.6 76.0 5.03 12.5 

60 89.6 61.2 4.68 5.6 

80/67 67.2 52.2 81.0 5.06 13.3 70 83.0 51.3 5.09 4.8 

85/71 71.5 53.8 85.9 5.08 14.1 80 80.7 52.4 5.60 4.2 

75/63 64.8 51.3 77.8 4.77 13.6 60 88.3 68.9 4.76 5.4 

80/67 69.1 53.1 82.6 4.79 14.4 70 70 85.9 66.8 5.20 4.8 

85/71 73.7 54.5 87.8 4.81 15.3 80 84.5 63.6 5.70 4.3 

75/63 65.9 51.8 78.8 4.63 14.2 60 91.1 75.0 4.81 5.6 

80/67 70.3 53.6 83.7 4.64 15.2 70 89.4 70.7 5.25 5.0 

85/71 75.1 55.0 89.0 4.65 16.2 80 86.8 66.6 5.75 4.4 

75/63 61.1 49.9 74.6 5.28 11.6 

60 94.1 56.5 4.73 5.8 

80/67 65.3 51.7 79.4 5.30 12.3 70 83.6 89.6 5.28 4.6 

85/71 69.6 53.2 84.3 5.32 13.1 80 87.3 67.4 5.75 4.4 

75/63 63.1 50.7 76.3 4.99 12.6 60 97.7 80.7 4.88 5.9 

80/67 67.5 52.4 81.2 5.01 13.5 80 70 96.0 74.0 5.32 5.3 

85/71 71.8 54.0 86.1 5.03 14.3 80 92.7 72.3 5.84 4.7 

75/63 64.1 51.2 77.2 4.85 13.2 60 100.8 84.2 4.92 6.0 

80/67 68.6 52.9 82.2 4.86 14.1 70 98.6 79.9 5.37 5.4 

85/71 73.1 54.5 87.3 4.87 15.0 80 95.7 74.9 5.88 4.8 

75/63 57.7 48.5 72.1 5.82 9.9 

80/67 61.7 50.3 76.6 5.85 10.5 

85/71 65.9 51.9 81.4 5.86 11.2 

75/63 59.7 49.3 73.6 5.49 10.9 


80/67 63.8 51.1 78.2 5.52 11.6 

85/71 68.1 52.7 83.0 5.54 12.3 

75/63 60.7 49.7 74.3 5.34 11.4 

80/67 65.0 51.5 79.1 5.35 12.1 

85/71 69.4 53.2 84.1 5.36 13.0 

75/63 54.6 47.0 70.0 6.43 8.5 

80/67 58.2 48.8 74.3 6.49 9.0 

85/71 62.2 50.4 78.8 6.52 9.5 

75/63 56.4 47.8 71.2 6.08 9.3 

80/67 60.3 49.7 75.6 6.10 9.9 

85/71 64.4 51.3 80.3 6.13 10.5 

75/63 57.2 48.3 71.7 5.92 9.7 

80/67 61.3 50.1 76.3 5.92 10.3 

85/71 65.5 51.8 81.1 5.93 11.0 

Power 

Input 

(kW) 

COP 



heating. 













Revised 10-12 


6720220353

34 

EC Series 

ELECTRICAL DATA 

Series EC Water Source Heat Pump 

Model 

Electrical 

Symbol 

Voltage/Hz/ Phase 

Electrical Data 

Compressor Blower Motor Min. 

Circuit 

Quantity RLA LRA Quantity FLA HP Amps 

Max Fuse/ 

HARC 

EC007 

0 115/60/1 1 5.0 36.2 1 2.2 0.1 8.5 15 

1 208-230/60/1 1 2.5 17.7 1 0.96 0.1 4.0 15 

0 115/60/1 1 7.0 45.6 1 2.2 0.1 11.0 15 

EC009 1 208-230/60/1 1 3.4 22.2 1 0.96 0.1 5.2 15 

2 265/60/1 1 2.9 18.8 1 0.85 0.1 4.4 15 

0 115/60/1 1 9.6 58.4 1 2.2 0.1 14.2 20 

EC012 1 208-230/60/1 1 4.6 27.9 1 0.96 0.1 6.7 15 

2 265/60/1 1 3.8 22.2 1 0.85 0.1 5.6 15 

EC015 

1 208-230/60/1 1 5.6 29.0 1 0.96 0.1 7.9 15 

2 265/60/1 1 4.6 20.0 1 0.85 0.1 6.6 15 

EC018 

1 208-230/60/1 1 6.5 43.0 1 1.8 0.25 9.9 15 

2 265/60/1 1 5.8 46.0 1 1.6 0.25 8.9 15 

1 208-230/60/1 1 7.4 43.0 1 1.8 0.25 11.1 15 

EC024 

2 265/60/1 1 6.7 46.0 1 1.6 0.25 10.0 15 

3 208-230/60/3 1 5.9 63.0 1 1.8 0.25 9.2 15 

4 460/60/3 1 2.9 30.0 1 0.9 0.25 4.5 15 

1 208-230/60/1 1 9.9 54.0 1 1.8 0.25 14.2 20 

EC030 

2 265/60/1 1 8.5 46.0 1 1.6 0.25 12.2 20 

3 208-230/60/3 1 6.9 63.0 1 1.8 0.25 10.4 15 

4 460/60/3 1 3.6 30.0 1 0.9 0.25 5.4 15 

1 208-230/60/1 1 13.0 74.0 1 4.4 0.50 20.7 30 

EC036 

2 265/60/1 1 11.3 67.0 1 3.3 0.50 17.4 25 

3 208-230/60/3 1 7.8 68.0 1 4.4 0.50 14.2 20 

4 460/60/3 1 3.9 34.0 1 1.8 0.50 6.7 15 

1 208-230/60/1 1 13.6 88.0 1 4.4 0.50 21.4 35 

EC041 

2 265/60/1 1 12.0 67.0 1 3.3 0.50 18.3 30 

3 208-230/60/3 1 8.8 68.0 1 4.4 0.50 15.4 20 

4 460/60/3 1 4.4 34.0 1 1.8 0.50 7.3 15 

1 208-230/60/1 1 13.6 88.0 1 4.4 0.50 21.4 35 

EC042 

2 265/60/1 1 12.0 67.0 1 3.3 0.50 18.3 30 

3 208-230/60/3 1 8.8 68.0 1 4.4 0.50 15.4 20 

4 460/60/3 1 4.4 34.0 1 1.8 0.50 7.3 15 

1 208-230/60/1 1 15.7 84.0 1 4.4 0.75 24.0 35 

EC048 

3 208-230/60/3 1 11.0 88.0 1 4.4 0.75 18.2 25 

4 460/60/3 1 5.4 44.0 1 2.8 0.75 9.6 15 

5 575/60/3 1 4.0 36.0 1 2.6 0.75 8.1 15 

1 208-230/60/1 1 26.3 134.0 1 4.4 0.75 37.2 60 

EC060 

3 208-230/60/3 1 15.6 110.0 1 4.4 0.75 23.9 35 

4 460/60/3 1 7.8 52.0 1 2.8 0.75 12.5 20 

5 575/60/3 1 5.8 38.9 1 2.6 0.75 9.8 15 

1 208-230/30/1 1 30.1 158.0 1 4.4 0.75 42.0 70 

EC070 

3 208-230/60/3 1 20.5 155.0 1 4.4 0.75 30.0 50 

4 460/60/3 1 9.6 75.0 1 2.8 0.75 14.8 20 

5 575/60/3 1 7.6 54.0 1 2.6 0.75 12.1 15 

NOTES: 

208/230V units shipped with transformer wired for 230V—for 208V remove orange tranformer primary lead and replace with red lead. All blower motors are single phase. 

UNIT POWER SUPPLY: A voltage variation of +/- 10% of nameplate rating is acceptable. Phase imbalance shall not exceed 2%. 

6720220353 


Blower Performance 

EC Series 35 

BLOWER PERFORMANCE CFM 


Available External Static Pressure (in. wc. Wet coil and filter included) 

Model 

Motor Speed 0.10 0.20 0.30 0.40 0.50 0.60 0.70 0.80 0.90 1.00 1.10 1.20 

EC007 

EC009 

EC012 

EC015 

EC018 

EC024 

EC030 

EC036 

EC041 

EC042 

EC048 

EC060 

EC070 

High 410 380 350 315 280 210 - - - - - - 

Medium 390 360 330 300 260 - - - - - - - 

Low 370 340 295 250 - - - - - - - - 

High 410 380 350 315 280 210 - - - - - - 

Medium 390 360 330 300 260 - - - - - - - 

Low 370 340 295 250 - - - - - - - - 

High 425 410 390 370 350 325 300 - - - - - 

Medium 410 395 375 355 330 305 - - - - - - 

Low 385 370 350 330 305 - - - - - - - 

High 520 500 480 460 430 400 340 - - - - - 

Medium 380 370 360 340 330 - - - - - - - 

Low 320 300 280 - - - - - - - - - 

High 770 700 680 650 610 570 530 515 - - - - 

Medium 670 650 615 570 530 515 - - - - - - 

Low 560 520 510 - - - - - - - - - 

High 900 850 800 760 710 690 680 670 - - - - 

Medium 750 720 690 670 - - - - - - - - 

Low 670 - - - - - - - - - - - 

High 1250 1170 1120 1070 940 830 740 650 - - - - 

Medium 1050 980 920 830 760 700 - - - - - - 

Low 975 910 870 740 640 - - - - - - - 

High 1500 1440 1370 1290 1210 1120 1000 900 - - - - 

Medium 1410 1350 1290 1220 1150 1060 900 - - - - - 

Low 1290 1250 1200 1150 1080 1000 - - - - - - 

High 1260 1180 1100 1030 960 870 810 720 - - - - 

Medium 1210 1150 1070 1010 940 850 750 - - - - - 

Low 1000 960 920 860 800 740 - - - - - - 

High 1560 1500 1420 1340 1260 1170 1070 950 - - - - 

Medium 1470 1410 1340 1270 1200 1110 1010 - - - - - 

Low 1340 1300 1250 1200 1130 1050 - - - - - - 

High 1880 1830 1780 1710 1630 1550 1460 1350 1300 - - - 

Medium 1620 1600 1580 1530 1490 1420 1350 - - - - - 

Low 1390 1360 1330 1310 1290 1250 - - - - - - 

High 2160 2090 2030 1960 1870 1800 1730 1680 1640 1600 1550 1500 

Medium 1910 1840 1790 1710 1620 1560 1490 1430 - - - - 

Low 1600 1580 1550 1510 1460 - - - - - - - 

High 2240 2220 2200 2150 2050 2000 1940 1870 1870 1800 1700 1590 

Medium 1900 1890 1880 1870 1860 1825 1790 1730 1670 1590 1500 - 

Low 1570 1560 1550 1540 1530 1505 1475 1440 1400 - - - 

Revised 10-12 


6720220353

36 

EC Series 

Physical Data 

PHYSICAL DATA 


Unit Size EC007 EC009 EC012 EC015 EC018 EC024 EC030 

Compressor Type Rotary Rotary Rotary Rotary Reciprocating Reciprocating Reciprocating 

Quantity 1 1 1 1 1 1 1 

Refrigerant Charge oz. 21 21 22 27 35 50 48 

Coil Face Area Ft 2 0.90 0.90 0.97 1.42 1.88 2.12 2.29 

Rows 3 3 3 3 3 3 3 

Filter Size HZ (Qty) in. (Nominal) 10 x 16 x 1 (1) 10 x 16 x 1 (1) 10 x 16 x 1 (1) 16 x 20 x 1 (1) 16 x 20 x 1 (1) 18 x 20 x 1 (1) 18 x 20 x 1 (1) 

Filter Size VT (Qty) in. (Nominal) 10 x 16 x 1 (1) 10 x 16 x 1 (1) 10 x 16 x 1 (1) 16 x 20 x 1 (1) 16 x 20 x 1 (1) 18 x 20 x 1 (1) 20 x 20 x 1 (1) 

Blower Size in. 4 x 6 4 x 6 4 x 7 4 x 7 9 x 7 9 x 7 9 x 7 

Motor HP 1/10 1/10 1/10 1/10 1/4 1/4 1/4 

Quantity 1 1 1 1 1 1 1 

Type PSC PSC PSC PSC PSC PSC PSC 

Water Connections in. FPT 3/4 3/4 3/4 3/4 3/4 3/4 3/4 

Rated Water Flow Rate (GPM) 2 2.5 3 4 5 6 7 

Water Pressure Drop @ Rated 

Flow (PSI/FOH) water loop 

2.4/5.6 3.2/7.0 4.5/10.4 5.6/13.0 8.4/19.4 5.1/11.8 5.6/12.9 

cooling 

Condensate Connection in. FPT 3/4 3/4 3/4 3/4 3/4 3/4 3/4 

Unit Ship Weight Lbs. (V/H) 127 / 140 129 / 142 140 / 154 170 / 187 195 / 215 228 / 251 245 / 270 

Unit Operating Weight Lbs (V/H) 118 / 130 120 / 132 129 / 142 158 / 174 180 / 198 205 / 226 230 / 253 

Unit Size EC036 EC041 EC042 EC048 EC060 EC070 

Compressor Type Reciprocating Reciprocating Reciprocating Scroll Scroll Scroll 

Quantity 1 1 1 1 1 1 

Refrigerant Charge oz. 62 70 66 74 99 115 

Coil Face Area Ft 2 3.50 2.29 3.50 4.50 4.50 6.00 

Rows 3 4 3 3 3 3 

Filter Size HZ (Qty) in. (Nominal) 18 x 30 x 1 (1) 20 x 20 x 1 (1) 18 x 30 x 1 (1) 18 x 20 x 1 (2) 18 x 20 x 1 (2) 20 x 24 x 1 (2) 

Filter Size VT (Qty) in. (Nominal) 24 x 24 x 1 (1) 20 x 20 x 1 (1) 24 x 24 x 1 (1) 24 x 30 x 1 (1) 24 x 30 x 1 (1) 16 x 30 x 1 x (2) 

Blower Size ins. 9 x 7 9 x 7 9 x 7 10 x 8 11 x 9 11 x 9 

Motor HP 1/2 1/2 1/2 3/4 3/4 3/4 

Quantity 1 1 1 1 1 1 

Type PSC PSC PSC PSC PSC PSC 

Water Connections in. FPT 3/4 3/4 3/4 1 1 1 

Rated Water Flow Rate (GPM) 9 9 10 12 15 16 

Water Pressure Drop @ Rated 

Flow (PSI/FOH) water loop 

3.7/8.6 3.8/8.7 4.5/10.5 4.2/9.8 4.4/10.2 9.1/21.1 

cooling 

Condensate Connection in. FPT 3/4 3/4 3/4 3/4 3/4 3/4 

Unit Ship Weight Lbs. (V/H) 288 / 317 265 / 292 276 / 304 328 / 361 360 / 396 410 / 451 

Unit Operating Weight Lbs (V/H) 268 / 295 250 / 275 256 / 282 304 / 334 339 / 373 385 / 424 

6720220353 


Vertical Unit Dimensions 

EC Series 37 

VERTICAL UNIT DIMENSIONS 

Vertical Top Discharge Water Source Heat Pump 

Overall unit dimensions do not include filter rack or duct flanges. 

Model 

A B C D E F G H J K M N P Q 

Width Depth Height 

R/A 

Duct 

Width 

R/A 

Duct 

Flange 

Height 

Filter 

Rack 

Height 

Condenser 

Water 

Connections 

Recommended 

Replacement 

Nominal 

Filter Size 

EC007 19.00 19.00 24.25 11.75 7.75 3.50 8.25 2.38 4.88 7.38 15.00 8.00 10.00 8.25 3/4"FPT 10 × 16 × 1 

EC009 19.00 19.00 24.25 11.75 7.75 3.50 8.25 2.38 4.88 7.38 15.00 8.00 10.00 8.25 3/4"FPT 10 × 16 × 1 

EC012 19.00 19.00 24.25 11.75 7.75 4.00 9.75 2.38 4.88 7.38 15.00 8.00 10.00 5.00 3/4"FPT 10 × 16 × 1 

EC015 21.50 21.50 32.25 11.75 9.75 5.88 7.88 2.38 7.38 13.25 17.50 14.00 16.00 7.88 3/4"FPT 16 × 20 × 1 

EC018 21.50 21.50 32.25 16.25 13.75 1.75 5.62 2.38 7.38 13.25 17.50 14.00 16.00 5.62 3/4"FPT 16 × 20 × 1 

EC024 21.50 21.50 36.25 16.25 13.75 1.75 5.62 2.38 7.38 12.50 17.50 16.00 18.00 5.62 3/4"FPT 18 × 20 × 1 

EC030 21.50 21.50 39.25 16.25 13.75 1.75 5.62 2.38 7.38 12.50 17.50 18.00 20.00 5.62 3/4"FPT 20 × 20 × 1 

EC036 21.50 26.00 43.25 16.25 15.75 4.75 5.00 2.38 8.38 14.75 22.00 22.00 24.00 5.00 3/4"FPT 24 × 24 × 1 

EC041 21.50 21.50 39.25 16.25 13.75 1.75 5.62 2.38 8.38 14.75 17.50 18.00 20.00 5.62 3/4"FPT 20 × 20 × 1 

EC042 21.50 26.00 43.25 16.25 15.75 4.75 5.00 2.38 8.38 14.75 22.00 22.00 24.00 5.00 3/4"FPT 24 × 24 × 1 

EC048 24.00 32.50 45.25 17.25 17.75 7.38 5.12 2.63 8.38 14.75 28.00 22.00 24.00 5.12 1"FPT 24 × 30 × 1 

EC060 24.00 32.50 45.25 17.25 17.75 7.38 5.12 3.00 8.50 15.00 28.00 22.00 24.00 5.12 1"FPT 24 × 30 × 1 

EC070 26.00 33.25 58.25 17.75 17.75 8.50 6.50 3.38 8.38 17.38 28.00 30.00 32.00 6.50 1"FPT 16 × 30 × 1 (2) 

NOTE: All dimensions in inches unless otherwise noted. All dimensions within +– 0.125". Specifications subject to change without notice. 

Left Hand Return (FLT) Right Hand Return (FRT) Return Air (Filter) View 

Service Clearances 

A 

I 

R 

C 

O 

I 

L 

Blower 

Blower Access 

18" Minimum 

24" Optimum 

Compressor 

Compressor Access and 

Electrical/Control Access 

24" Minimum 

36" Optimum 

Electrical 

Control 

Box 

Front of Unit 

NOTE: The local electric codes may require 36" or more clearance at the electrical control box. 

Revised 10-12 


6720220353

38 

EC Series 

Vertical Unit Dimensions 

VERTICAL UNIT DIMENSIONS 

Vertical Counterflow Water Source Heat Pump 


Model 

A B C D E F G H J K M N P 


Blower Blower 

Opening Opening 

R/A 

Duct 

Flange 

Width 

R/A 

Duct 

Flange 

Height 

Filter 

Rack 

Height 

Condenser 

Water 

Connections 

Recommended 

Replacement 

Nominal 

Filter Size 

EC007 19.00 19.00 24.25 6.25 4.25 6.00 10.25 5.00 10.00 10.25 15.00 8.00 10.00 3/4"FPT 10 × 16 × 1 

EC009 19.00 19.00 24.25 5.25 4.25 6.00 10.25 5.00 10.00 10.25 15.00 8.00 10.00 3/4"FPT 10 × 16 × 1 

EC012 19.00 19.00 24.25 6.25 4.00 7.00 12.38 4.50 9.50 7.75 15.00 8.00 10.00 3/4"FPT 10 × 16 × 1 

EC015 21.50 21.50 32.25 9.63 4.25 6.50 12.00 5.88 16.75 12.00 17.50 14.00 16.00 3/4"FPT 16 × 20 × 1 

EC018 21.50 21.50 32.25 9.63 9.25 8.13 8.00 5.88 16.75 8.00 17.50 14.00 16.00 3/4"FPT 16 × 20 × 1 

EC024 21.50 21.50 36.25 9.63 9.25 8.13 8.00 5.88 16.00 8.00 17.50 16.00 18.00 3/4"FPT 18 × 20 × 1 

EC030 21.50 21.50 39.25 9.63 9.25 8.13 8.00 4.75 15.00 8.00 17.50 18.00 20.00 3/4"FPT 20 × 20 × 1 

EC036 21.50 26.00 43.25 10.25 9.25 7.75 9.50 3.75 15.50 8.75 22.00 22.00 24.00 3/4"FPT 24 × 24 × 1 

EC041 21.50 21.50 39.25 10.25 9.25 7.25 7.75 4.38 16.75 7.75 17.50 18.00 20.00 3/4"FPT 20 × 20 × 1 

EC042 21.50 26.00 43.25 10.25 9.25 7.75 9.50 3.50 15.50 9.50 22.00 22.00 24.00 3/4"FPT 24 × 24 × 1 

EC048 24.00 32.50 45.25 11.75 10.75 9.25 9.00 5.00 16.50 9.00 28.00 22.00 24.00 1"FPT 24 × 30 × 1 

EC060 24.00 32.50 45.25 12.50 12.00 9.50 9.50 4.25 17.75 8.00 28.00 22.00 24.00 1"FPT 24 × 30 × 1 

EC070 26.00 33.25 58.25 12.00 12.50 10.63 9.00 3.00 18.50 9.00 28.00 30.00 32.00 1"FPT 16 × 30 × 1 (2) 

NOTE: All dimensions in inches unless otherwise noted. All dimensions within +– 0.125". Specifications subject to change without notice. 

Left Hand Return (FLB) 

Right Hand Return (FRB) 

6720220353 


Horizontal Unit Dimensions 

EC Series 39 

HORIZONTAL UNIT DIMENSIONS 

Horizontal Water Source Heat Pump 


Model 

A B C D E F G H J K M N P Q R T 


R/A 

Duct 

Width 

Filter 

Rack 

Height 

R/A 

Duct 

Flange 

Height 

Condenser 

Water 

Connections 

Recommended 

Replacement 

Nominal 

Filter Size 

EC007 19.00 31.00 13.25 2.00 15.00 14.00 2.38 7.38 2.25 11.75 2.00 7.75 2.25 1.88 10.00 8.00 3/4"FPT 10 × 16 × 1 

EC009 19.00 31.00 13.25 2.00 15.00 14.00 2.38 7.38 2.25 11.75 2.00 7.75 2.25 1.88 10.00 8.00 3/4"FPT 10 × 16 × 1 

EC012 19.00 31.00 13.25 2.00 15.00 14.00 2.38 7.38 2.50 11.75 2.00 7.75 2.25 3.00 10.00 8.00 3/4"FPT 10 × 16 × 1 

EC015 21.50 43.00 17.00 2.00 17.50 23.50 2.38 13.25 4.00 11.75 2.00 9.75 2.25 2.50 16.00 14.00 3/4"FPT 16 × 20 × 1 

EC018 21.50 43.00 17.00 2.00 17.50 23.50 2.38 13.25 3.50 11.75 2.00 13.75 3.50 1.75 16.00 14.00 3/4"FPT 16 × 20 × 1 

EC024 21.50 43.00 19.00 2.00 17.50 23.50 2.38 12.50 3.25 11.75 3.25 13.75 3.25 1.75 18.00 16.00 3/4"FPT 18 × 20 × 1 

EC030 22.00 45.00 19.00 2.00 19.50 23.50 2.38 12.50 2.50 13.75 1.50 15.75 2.50 1.50 18.00 16.00 3/4"FPT 18 × 20 × 1 

EC036 22.00 54.50 19.00 2.00 29.00 23.50 2.38 14.75 2.50 13.75 1.50 15.75 2.50 1.50 18.00 16.00 3/4"FPT 18 × 30 × 1 

EC041 21.50 43.00 22.00 2.00 17.50 23.50 2.38 14.75 2.50 13.75 3.00 15.75 2.50 3.50 20.00 18.00 3/4"FPT 20 × 20 × 1 

EC042 22.00 54.50 19.00 2.00 29.00 23.50 2.38 14.75 2.50 13.75 1.50 15.75 2.50 1.50 18.00 16.00 3/4"FPT 18 × 30 × 1 

EC048 36.00 43.00 21.00 2.25 33.75 7.00 2.63 14.75 10.13 15.75 3.50 15.75 3.00 3.50 20.00 18.00 1"FPT 18 × 20 × 1 (2) 

EC060 36.00 43.00 21.00 2.25 33.75 7.00 4.00 15.75 10.13 15.75 1.50 17.75 3.25 1.50 20.00 18.00 1"FPT 18 × 20 × 1 (2) 

EC070 26.00 78.00 21.50 2.50 44.00 31.50 3.12 17.00 2.75 17.75 2.75 17.75 2.75 1.25 20.50 18.50 1"FPT 20 × 24 × 1 (2) 

NOTE: All dimensions within +– 0.125". All condensate drain connections are 3/4" FPT. EC015-070 can be field converted between end blow 

and straight through supply air configurations. Specifications subject to change without notice. 

Left Hand Return End Blow (FLE) 

NOTE: Models EC048 & 060 Left Hand Return units have condenser 

water connections on the front right and electrical knockouts on the front left. 

Left Hand Return 

Straight Through (FLS) 

Right Hand Return End Blow (FRE) 

Blower Access 

18" Minimum 

24" Optimum 

Blower Access 

18" Minimum 

24" Optimum 

AIR COIL 

AIR COIL 

Blower 

Blower 

Electrical 

Control 

Box 

Service Clearances 

Electrical 

Control 

Compressor Box 

Compressor 

Right Hand Return 

Straight Through (FRS) 


Control Access 

24" Minimum 

36" Optimum 


Control Access 

24" Minimum 

36" Optimum 

NOTE: The local electric codes may require 36" or more clearance at the electrical control box. 

Revised 10-12 


6720220353

40 

EC Series 

Typical Wiring Diagram 

TYPICAL WIRING DIAGRAMS 

1/2 through 6 ton | Single stage unit | 208-230V/1ph with PSC direct drive motor 

6720220353 



EC Series 41 

1/2 through 6 tons | Single stage unit | 208-230V/1ph with PSC direct drive motor 

– Hot Gas Reheat 

Revised 10-12 


6720220353

42 

EC Series 


1/2 through 6 tons | Single stage unit | 208/230V/1ph with PSC direct drive motor – 

Economizer 

6720220353 



EC Series 43 

3 through 6 tons | Single stage unit | 208/230V/1ph with PSC direct drive motor – 

Hot Gas Reheat & Economizer 

Revised 10-12 


6720220353

44 

EC Series 


2 through 6 tons | Single stage unit | 208/230V/3ph with PSC direct drive motor 

6720220353 



EC Series 45 

2 through 6 tons | Single stage unit | 208-230V/3ph with PSC direct drive motor 

– Hot Gas Reheat 

Revised 10-12 


6720220353

46 

EC Series 



Economizer 

6720220353 



EC Series 47 


Hot Gas Reheat & Economizer 

Revised 10-12 


6720220353

48 

EC Series 

Specification Guide 

SPECIFICATION GUIDE 

1.0 General 

Furnish and install FHP water source heat pumps 

as indicated on the plans with capacities and 

characteristics as listed in the schedule and 

the specifications that follow. The units shall be 

manufactured in an ISO 9001:2000 certified facility. 

2.0 Horizontal/Vertical/Counterflow Water 

Source Heat Pumps 

Units shall be designed to operate throughout the 

range of entering fluid temperature of 50°F to 100°F 

in the cooling mode and 50°F to 80°F in the heating 

mode. Units shall have an operating range of 50°F 

to 110°F in the cooling mode and 25°F to 80°F in 

the heating mode when equipped with the optional 

extended range package. Equivalent units from other 

manufacturers can be proposed provided approval to 

bid is given 10 days prior to bid closing. All equipment 

with a nominal capacity of 135,000 BTUH Total Cooling 

or lower must be listed in the current AHRI Applied 

Equipment Directory under the AHRI Standard AHRI/ 

ISO- 13256-1, WLHP, GWHP and GLHP certification 

points. 

All equipment in this section must meet or exceed the 

DOE mandated minimum EER’s and COP’s as listed in 

ASHRAE 90.1 as follows: 

For the AHRI/ISO-13256-1, WLHP Rating (12.0 

EER and 4.2 COP for units larger than a nominal 

17,000 BTUH Total Cooling – 11.2 EER and 4.2 

COP for units below a nominal 17,000 BTUH Total 

Cooling). 

For the AHRI/ISO-13256-1, GLHP Rating a minimum 

13.4 EER and 3.1 COP. All units shall be listed 

with Underwriters Laboratories (UL) for safety. 

2.01 Basic Construction 

A. Units shall have the air flow arrangement as shown 

on the plans. If units with these arrangements 

are not used, the contractor supplying the water 

source heat pumps is responsible for any extra 

costs incurred by other trades and must submit 

detailed mechanical drawings showing ductwork 

requirements and changes or relocation of 

any other mechanical or electrical system. If 

other arrangements make servicing difficult the 

contractor must provide access panels and clear 

routes to ease service. The architect must approve 

all changes 10 days prior to bid. 

B. All units shall have stainless steel drain pans to 

comply with this project’s IAQ requirements. No 

exceptions shall be allowed. 

C. All water source heat pumps shall be fabricated 

from heavy-gauged steel finished with Galvalume® 

plus, an aluminum-zinc alloy with a clear acrylic 

for additional corrosion protection. All interior 

surfaces shall be lined with 1/2 inch thick, multi 

density acoustic insulation. Insulation within the 

air handling section shall not have any exposed 

edges. All insulation must meet NFPA 90A and 

be certified to meet the GREENGUARD Indoor 

Air Quality Standard for Low Emitting Products. 

One blower access panel and two compressor 

compartment access panels shall be removable 

with supply and return air ductwork in place. 

D. Unit shall have a floating base pan consisting of 

a ½” (12 mm) thick high density elastomeric pad 

between the compressor base plate and the unit 

base pan to prevent transmission of vibration to the 

structure. 

E. All units shall have a factory installed two sided 

filter rack capable of accepting one inch filters. 

Units shall have a 1 inch thick throwaway type 

glass fiber filter as standard. The filter rack shall 

incorporate a 1 inch duct flange. The contractor 

shall purchase one spare set of filters and replace 

factory-shipped filters upon completion of start-up. 

F. Cabinets shall have separate holes and knockouts 

for entrance of line voltage and low voltage control 

wiring. Supply and return water connections 

shall be brass FPT fittings and shall be securely 

mounted flush to the cabinet allowing for 

connection to a flexible hose without the use of a 

back-up wrench. Water connections which protrude 

through the cabinet shall not be allowed. 

G. Hanging brackets and condensate overflow 

protection shall be provided as standard for 

horizontal units. 

2.02 Fan and Motor Assembly 

A. Units shall have a direct-drive forward curved type 

centrifugal fan. The fan motor shall be 3-speed, 

permanently lubricated, PSC type with thermal 

overload protection. 

B. The fan and motor assembly must be capable of 

overcoming the external static pressures as shown 

on the schedule. External static pressure rating 

of the unit shall be based on a wet coil. Ratings 

based on a dry coil shall NOT be acceptable. 

6720220353 



EC Series 49 

2.03 Refrigerant Circuit 

Units shall use R-410A refrigerant. Units that use R-22 

refrigerant shall not be allowed. 

All units shall have a factory sealed and fully charged 

refrigerant circuit with the following components: 

A. Hermetic compressor: Hermetic reciprocating, 

rotary, or scroll compressors shall be specifically 

designed for R-410A refrigerant and shall be 

internally sprung (if reciprocating), externally 

isolated and with thermal overload protection. 

B. Refrigerant metering thermal expansion valves or 

capillary tubes 

C. Finned tube refrigerant to air heat exchanger. 

Refrigerant to air heat exchangers shall utilize 

enhanced aluminum fins and rifled copper 

tube construction rated to withstand 600 PSIG 

refrigerant working pressure. All air coils shall have 

non-ferrous aluminum end plates. 

Option for refrigerant to air coils to have a baked 

polyester enamel coating (rated at 1,000 hour salt 

spray protection equivalent or better). 

D. Reversing valve. Reversing valves shall be fourway 

solenoid activated refrigerant valves which 

shall fail to the heating operation should the 

solenoid fail to function. Reversing valves which 

fail to the cooling operation shall not be allowed. 

E. Coaxial (tube in tube) refrigerant to water heat 

exchanger. Refrigerant to water heat exchangers 

shall be of copper inner water tube and steel 

outer refrigerant tube design rated to withstand 

600 PSIG working refrigerant pressure and 400 

PSIG working water pressure. Shell and Tube 

style refrigerant to water heat exchangers shall 

be treated as pressure vessels and shall require 

refrigerant pressure relief valves piped to the 

exterior of the building. The contractor supplying 

the water source heat pumps with Shell and Tube 

heat exchangers shall be responsible for any 

additional installation costs. Brazed Plate water to 

refrigerant heat exchangers shall require additional 

centrifugal separators added to the supply water 

piping at each unit. Each separator shall have 

an automated clean out valve piped to a waste 

line. The contractor supplying water source heat 

pumps with Brazed Plate heat exchangers shall be 

responsible for any additional costs. 

Option for E: Cupro-Nickel water coil – The 

refrigerant to water heat exchanger shall be of 

cupro-nickel inner water tube construction. 

F. Safety controls including both a high pressure 

and low pressure switch. Temperature sensors 

shall not replace these safety switches. See the 

controls section of this specification for additional 

information. 

G. Access fittings shall be factory installed on high 

and low pressure refrigerant lines to facilitate field 

service. 

H. Activation of any safety device shall prevent 

compressor operation via a lockout circuit. The 

lockout circuit shall be reset at the thermostat or 

at the contractor supplied disconnect switch. Units 

which may be reset at the disconnect switch only 

shall not be acceptable. Refer to solid state safety 

circuit below. 

2.04 Electrical 

A control box shall be located within the unit and shall 

contain a transformer, controls for the compressor, 

reversing valve and fan motor operation and shall 

have a terminal block for low voltage field wiring 

connections. The transformer shall be rated for a 

minimum 50 VA. All units shall be name-plated for use 

with time delay fuses or HACR circuit breakers. Unit 

controls shall be 24 volts. 

Option: All transformers shall be rated 75VA and 

shall have a push button reset circuit breaker on the 

secondary power. 

2.05 Solid State Safety Circuit 

All units shall have a solid-state UPM safety control 

circuit with the following features: 

1. Anti-short cycle time delay on compressor 

operation. 

2. Random start on power up mode. 

3. Brown out/Surge/Power Interruption protection. 

4. Low Pressure Switch 120 second bypass timer. 

5. Shutdown on high or low refrigerant pressure safety 

switch inputs, and shutdown for the optional freezestat 

or high level condensate sensor. 

6. Alarm output which closes for selectable dry contact 

closure or 24 VAC remote fault indication. 

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50 

EC Series 


7. Alarm output selectable for constant output for 

general alarm notification, or pulse output for 

annunciation of the specific fault alarm. 

8. Reset unit at thermostat or disconnect. 

9. Automatic intelligent reset. Unit shall automatically 

reset after a safety shut down and restart the unit 

after the anti-short cycle timer and random start 

timer expire. Should a fault re-occur within 60 

minutes after reset, then a permanent lockout will 

occur. Reset attempts shall be selectable for either 

2 or 4 tries. Condensate overflow shall put the unit 

into a hard lockout on the first fault . 

10. Ability to defeat time delays for servicing. 

11. A light emitting diode (LED) to indicate safety 

alarms. The LED shall annunciate the following 

alarms: high refrigerant pressure, low refrigerant 

pressure, low water temperature, a high level of 

condensate in the drain pan, or brown out/surge/ 

power interruption. The LED will display each fault 

condition as soon as the fault occurs. If a permanent 

lockout occurs, then the fault LED will display the 

type of fault until the unit is reset. 

12. UL listed, CUL listed, and RFI, ESD, and 

transient protected. 

2.06 Options: 

A. Freeze Protection: the optional freeze protection 

sensor shall be mounted close to the water coil to 

monitor refrigerant temperature between water coil 

and the thermal expansion valve or capillary tube. If 

the refrigerant temperature between the expansion 

device and water coil drops below or remains at 30˚F 

for 30 seconds, the controller shall shut down the 

compressor and enter into a soft lockout condition. 

This trip point can be changed to 15˚F by cutting the 

R42 resistor located above the DIP switch SW1 for 

applications that employ antifreeze. The freezestat 

may not provide protection in the case of loss of 

flow in the heating mode. A flow switch or pressure 

differential switch is recommended to prevent unit 

operation in case of loss of flow. 

B. Condensate overflow protection: A condensate 

sensor shall activate the lockout circuit upon 

sensing a high level of condensate in the drain pan 

and immediately put the unit into a hard lockout. 

Condensate overflow protection shall be standard on 

all horizontal units. 

C. Extra quiet construction: Optional compressor blanket 

shall be provided on units having a capacity above 

18,000 BTUH. 

D. Hot Gas Reheat: Units as noted on the schedule shall 

be equipped with optional Hot Gas Reheat (HGRH). 

HGRH shall be either on/off control or modulating as 

noted in the specifications. 

On/Off HGRH shall be controlled by a humidistat 

connected to the unit H terminal and shall start the 

unit in the reheat mode should the humidity be above 

setpoint once the thermostat control is satisfied. 

Cooling or heating requirements shall take precedent 

over HGRH. 

Modulating Hot Gas Reheat (MHGRH) shall be active 

during the cooling mode. A 0 - 10 VDC signal from a 

sensor located in the unit discharge air supply shall 

modulate the hot gas valve to maintain an adjustable 

preset leaving air temperature to the conditioned 

space. 

E. Hot Gas Bypass: For units as noted on the schedule, 

supply each unit with a UL listed and MEA listed 

modulating hot gas bypass valve with factory supplied 

and installed controls to prevent air coils from frost 

development by taking hot gas and bypassing the 

water coil and expansion device and reintroducing 

the hot gas into the refrigerant line prior to the air coil. 

The hot gas bypass valve shall maintain a minimum 

refrigerant suction pressure to allow for a light load 

cooling mode or a low entering air temperature 

cooling mode. 

F. Water Differential Switch. Prevents unit operation if 

there is no fluid flow. 

G. Water Side Economizer: water side economizer shall 

be completely installed at the factory, with condensate 

drain pan(s), motorized 3 way valve, aqua stat, and 

all internal electric controls. Water side economizer 

shall be rated at 400 psi and UL listed for application 

with the heat pump. 

H. HR Hot Water Kits: 208/230-1-60 and 208/230-3- 

60 units shall be equipped with an optional factory 

installed external heat recovery kit for domestic hot 

water production. This kit shall include an internally 

protected hot water circulation pump, copper 

double wall vented coaxial water-to-refrigerant heat 

exchanger, air purge valve, 140°F (60°C) hot water 

temperature limit switch and an on/off switch/circuit 

breaker. 

6720220353 



EC Series 51 

I. Factory-installed control options: water differential 

pressure switch, 75 VA transformer (resettable), 

phase loss and reversal protection, and unit mounted 

disconnect switch. 

J. A 2”, four-sided filter rack is optional to accommodate 

nominal 2” thick pleated filters. 

3.0 Hose Kits 

All units shall be connected with hoses. The hoses 

shall be either 2 or 3 feet long, braided stainless steel, 

fire rated hoses complete with adapters. Non fire rated 

hoses are not acceptable. Optional ball valves with P/T 

ports, flow controller, Y strainer and electric valve shall 

be in included as specified in the schedule. 

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